Manufacturers can employ sodium hydroxide to create products including soap, rayon, paper, explosives, colors, and petroleum goods. Other uses for sodium hydroxide include cleaning and processing metal, coating metal with oxide, electroplating, and electrolytic extraction.
Sodium hydroxide has a potent corrosive and irritant effect. Any tissue that it comes into contact with could be severely burned and permanently harmed. Proteins can be hydrolyzed by sodium hydroxide, which can result in burns to the eyes and possibly long-term damage to the eyes. The United States Environmental Protection Agency (EPA), the International Agency for Research on Cancer (IARC), and the Department of Health and Human Services (DHHS) has not classified sodium hydroxide for carcinogenicity in humans.
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HCl(aq) + Ca(s) CaCl(aq) + H₂(g)
For the chemical reaction 2HCl(aq) + Ca(s) → CaCl2(aq) + H2(g), Phases are aq (aqueous), s (solid), g (gas)
Identify the phases of HCl(aq) + Ca(s)→CaCl2 (aq) + H2(g)
A solution made up of molecules dissolved in water is referred to as an aqueous (aq) solution. Any substance that is made up of molecules and is held together in a rigid, organized form is referred to as a solid (s).
A substance that is made up of molecules that are not bonded together in an organized form and are free to move about the surrounding area is referred to as gas (g).
According to the provided chemical equation, solid calcium (Ca) and aqueous hydrochloric acid (HCl) react to produce aqueous calcium chloride (CaCl2) and hydrogen gas (H2).
Solid calcium is made up of molecules held together in an organized, rigid structure, whereas aqueous hydrochloric acid is made up of molecules that are dissolved in water.
Aqueous calcium chloride and hydrogen gas are produced when these two chemicals react. Hydrogen gas is made up of molecules that are not held together in an ordered form and are free to move around the environment, whereas aqueous calcium chloride is made up of molecules that are dissolved in water.
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Using the periodic table, classify each of the following elements as a metal or a nonmetal, and then further classify each as a main-group (representative) element, transition metal, or inner transition metal: (a) uranium (b) bromine (c) strontium (d) neon (e) gold
Element, transition metal, or inner transition metal is given below.
What is periodic table?The periodic table is a tabular arrangement of the chemical elements organized on the basis of their atomic numbers, electron configurations, and recurring chemical properties. It is one of the most important tools in chemistry and is used for predicting the properties of different elements and their compounds. The elements are listed in order of increasing atomic number, which is the number of protons an element has in its nucleus.
(a) Uranium: Metal, Inner Transition Metal
(b) Bromine: Nonmetal, Main-group Element
(c) Strontium: Metal, Main-group Element
(d) Neon: Nonmetal, Main-group Element
(e) Gold: Metal, Transition Metal.
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In the quantum mechanical model of the atom, and electron is viewed as a wave-particle that occupies a three-dimensional space near the nucleus.
The movement of an electron around the nucleus is described by a mathematical function, which is called or known as an atomic wave or an atomic orbital. Hence the answer is - a wave and an orbital.
In the concept of quantum mechanical model of the atom, electrons (negatively charges particles) are seen as a wave substances/matters which cover a 3-d space around/near the nucleus. The motion of these electrons is explained by a wave function, that is called or known as an atomic orbital.
Wave function : A wave function is a mathematical function which tells the position of any particular electron around it's nucleus.
Atomic Orbital : It too, explains the position of any particular electron around it's nucleus and also the wave behavior of that electron of any specific atom.
The Quantum Mechanical model of an atom is used to explain/calculate the position and functioning of any particular electron and also explains the different energy levels such as - orbitals; energy sublevels; and principal energy levels.
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The correct question should be:
In the quantum-mechanical model of the atom, an electron is viewed as a wave-particle that occupies a three-dimensional space near the nucleus. the movement of the electron is described by a function, which is also called an atomic _______.
A student pushes a box with a force of 15 newtons (N) to make it slide across the floor. Once the box starts moving, a frictional force of 5 N acts upon it. If the student continues to push the box with a force of 15 N, what will happen to the box?
If the student continues to push the box with a force of 15 N, the box will continue to move with a force of 10N. Frictions acts in the opposite direction of motion.
What is force?The definition of force is the pushing and pulling of anything. Push as well as pull are the result of two objects interacting with one another. Stretch and crush are two more phrases that can be used to describe force.
A student pushes a box with a force of 15 newtons (N) to make it slide across the floor. Once the box starts moving, a frictional force of 5 N acts upon it. If the student continues to push the box with a force of 15 N, the box will continue to move.
Therefore, box will continue to move.
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Which statement explains why the speed of some chemical reactions is increased when the surface area of the reactant is increased?
a. This change increases the density of the reactant particles.
b. This change increases the concentration of the reactant.
c. This change exposes more reactant particles to a possible collision.
d. This change alters the electrical conductivity of the reactant particles.
The statement c. This change exposes more reactant particles to a possible collision explains why the speed of some chemical reactions is increased when the surface area of the reactant is increased.
What is the relationship between the speed of chemical reactions and surface area?The surface area of a reactant is directly related to the speed of a chemical reaction because as the surface area increases, the speed also increases due to the larger surface area allowing more particles to come into contact.
Therefore, with this data, we can see that the speed of a chemical reaction is directly proportional to the surface area of its reactants.
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The following data were collected at the endpoint ofa titration performed to find the molarity of an HClsolution.Volume of acid (HCl) used = 14.4 mLVolume of base (NaOH) used = 22.4 mLMolarity of standard base (NaOH) = 0.20 MWhat is the molarity of the acid solution?(a) 1.6 M(b) 0.64 M(c) 0.31 M(d) 0.13 M
According to the problem, the molarity of the acid solution is 0.64 M.The following data were collected at the endpoint ofa titration performed to find the molarity of an HClsolution.
What is the molarity ?
Molarity is a measure of the concentration of a solution, expressed as the number of moles of a solute per liter of solution. It is commonly used to measure the concentration of a dissolved substance in a solution. For example, a solution containing one mole of a solute dissolved in one liter of solution would have a molarity of one. Molarity is often expressed using the symbol M.
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Which conditions will increase the rate of a chemical reaction? a. decreases temperature and decreased concentration of reactants b. decreased temperature and increased concentration of reactants c. increased temperature and decreased concentration of reactants d. increased temperature and increased concentration of reactants
Option d. increased temperature and increased concentration of reactants will increase the rate of a chemical reaction.
What is the rate of a chemical reaction?The rate of a chemical reaction can be defined as the speed at which a chemical reaction occurs, which is typically expressed in terms of the change in concentration of a reactant or product over time.
Therefore, with this data, we can see that the rate of a chemical reaction is a measure of how quickly the reactants are converted into products in a chemical process.
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Ground turkey must be cooked to an internal temperature of 165°F (74°C). Why must turkey be cooked to this minimum temperature?
A 0.3205g sample of CaCO3 was dissolved in HCl and the resulting solution diluted to 250.ml in a volumetric flask. A 25 mL sample of the solution required 18.75mL of EDTA solution for titration to the Eriochrome Black T end point. What is the concentration of Ca2+ (mol/L) in the 250.0ml of CaCl2 solution? How many mole of Ca2+ are contained in a 250mL sample? How many mole of EDTA are contained in the 18.75mL used for titration? What is the concentration (mol/L) of the EDTA solution?
0.3205g sample of CaCO3 was dissolved in HCl and the resulting solution diluted to 250.ml in a volumetric flask. [tex]Ca^{2+}[/tex]=0.01281M[tex]Ca^{2+}[/tex]
What is meant by HCl ?
Put around 100 ml of water in a 1000 ml volumetric flask that has been cleaned and dried. 8.5 cc of concentrated hydrochloric acid should be added while swirling continuously.700 ml more of water should be added, mixed, and let to cool to room temperature.In the food, textile, metal, and rubber sectors, hydrogen chloride (HCl) is frequently employed as a bleaching agent to neutralize alkaline substances. When discharged into the soil, it is neutralized, and when it comes into contact with water, it hydrolyzes quickly.For every 100 mL of water, you'll need 10 mL of concentrated hydrochloric acid (HCl) to achieve the required concentration in order to create a 10% HCl solution.[tex]Ca^{2+}[/tex] =0.3205g CaCO3∗1mol / CaCO3100.0869g
CaCO3∗1mol[tex]Ca^{2+}[/tex]1mol / CaCO30.250L
[tex]Ca^{2+}[/tex]=0.01281M[tex]Ca^{2+}[/tex]
How many mole of [tex]Ca^{2} +[/tex] are contained in a 250mL sample?
[tex]n_Ca{^{2+} }[/tex] = (0.250 L) (0.01281 mol / L [tex]Ca^{2+}[/tex])
[tex]n_Ca^{2+}[/tex] = 3.203×[tex]10^{-3}[/tex]mol[tex]Ca^{2+}[/tex]
[tex]n_E_D_T_A[/tex] = 0.025L[tex]Ca^{2+}[/tex] ∗ 0.01281mol / L [tex]Ca^{2+}[/tex] ∗ 1molEDTA1/ 1mol[tex]Ca^{2+}[/tex]
[tex]Ca^{2+}[/tex]=0.01281M[tex]Ca^{2+}[/tex]
What is the concentration (mol/L) of the EDTA solution
[tex]n_E_{DTA }[/tex]= 3.203 \times.
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mium and zinc are used in a cell to produce cadmium metal. using the standard reduction potentials shown, calculate the cell potential and identify the type of ce
Cd2+(aq) + 2e- → Cd(s) E° = -0.403 V
Zn2+(aq) → Zn(s) E° = -0.761 V
Cell Potential = E° (cathode) - E° (anode)
Cell Potential = -0.403 V - (-0.761 V)
Cell Potential = 0.358 V
This is an oxidation-reduction or redox reaction, since there is an oxidation (Zn2+ → Zn) and a reduction (Cd2+ + 2e- → Cd) reaction occurring.
Type of Cell: Galvanic Cell
What is Galvanic Cell?
A galvanic cell is an electrochemical cell in which a spontaneous redox reaction produces an electric current. It consists of two half-cells: an anode (negative electrode) and a cathode (positive electrode). The two half-cells are connected by a salt bridge or a porous membrane that allows the flow of ions between them. The anode and cathode are typically made from different metals or metal salts and the electrons produced by the redox reaction flow from the anode to the cathode, thus generating an electric current.
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Small quantities of oxygen can be prepared in the laboratory by heating potassium chlorate, KClO3(s).
The equation for the reaction is
2KClO3⟶2KCl+3O2
Calculate how many grams of O2(g) can be produced from heating 77.7 g KClO3(s).
Answer:
30.4 g of O2
Explanation:
To find the number of moles of KClO3, use the formula: moles = mass / molar mass.
Molar mass of KClO3 is = (39.1+35.5+3*16)=122.5g/mol
moles of KClO3 = 77.7g / 122.5g/mol = 0.634 mol
Therefore, the number of moles of O2 that can be produced is (3 moles O2/ 2 moles KClO3) x 0.634 moles KClO3 = 0.951 moles O2.
To find the mass of O2 produced, we use the formula: mass = moles x molar mass
molar mass of O2 = 2*16 =32 g/mol
mass of O2 = 0.951 moles * 32g/mol = 30.4 g of O2
So, from heating 77.7 g KClO3(s) 30.4 g of O2 can be produced.
(12) SEP Develop Models Show the periodicity of atomic size vs. atomic number by making a line graph that compares atomic radii across two periods.
According to the electronic configuration, along a period as the atomic number increases the atomic size decreases as electrons are added to the same shell.
What is electronic configuration?Electronic configuration is defined as the distribution of electrons which are present in an atom or molecule in atomic or molecular orbitals.It describes how each electron moves independently in an orbital.
Knowledge of electronic configuration is necessary for understanding the structure of periodic table.It helps in understanding the chemical properties of elements.
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Dr. Clark works with people who have had a heart attack. She is trying to help them
make good diet and exercise choices to reduce the possibility of having another
heart attack in the future. She is most likely a(n)
A) counseling psychologist.
B) educational psychologist.
C) health psychologist.
D) social psychologist.
She most likely works as a health psychologist because she combines resistance training with cardio exercise (jogging, swimming, and bicycling) (moderate weightlifting).
Can physical activity lessen heart attacks?A healthy heart is mostly dependent on physical activity. It's one of your best tools for building up your heart muscle, controlling your weight, and defending your arteries against damage brought on by high blood pressure, blood sugar, and cholesterol that can result in a heart attack or stroke.
Which activity is most beneficial for mental health?Aerobic exercise, such as jogging, swimming, cycling, walking, gardening, and dancing, has been shown to lessen anxiety and depression.
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an ancient human skull was found in the foothills of rexburg. in an attempt to determine when the person had lived, the skull was carbon dated. it was determined that the skull contained 80% of the 14c that is normally found in living tissue. approximately how old is the skull. the t1/2 for 14c is 5730 years.
Given that the skull contained 80% of the 14C that is normally found in living tissue, we can use the half-life of 14C to determine that the skull is about 11,460 years old.
The method of carbon dating is based on the fact that the radioactive isotope carbon-14 (14C) is present in all living organisms. When an organism dies, the amount of 14C in its tissue begins to decrease as it decays into nitrogen-14 (14N). By measuring the amount of 14C in a sample, scientists can determine how long ago the organism died. The half-life of 14C is 5730 years, which means that after 5730 years, half of the 14C in a sample will have decayed into 14N. After another 5730 years, half of the remaining 14C will have decayed, and so on. This is because it has taken 5730 years for the 14C to decay to half of the normal levels found in living tissue, and another 5730 years for it to decay to 80% of the normal levels. It's important to note that the carbon dating process is not always accurate and the age could be affected by different factors such as contamination, preservation of the sample, and the error of the measurement.
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Which of the following has the smallest radius?
A. I
B. I-
C. Br
D. Br-
Answer:
The answer is B. I-.
Explanation:
The radius of an atom depends on its electron configuration and can be influenced by various factors such as the number of electrons, the electron shielding effect, and the effective nuclear charge.
The size of an ion can be estimated by considering the number of electrons it has. A positively charged ion or a negatively charged ion will have a different size than the neutral atom because the number of electrons has changed. A positively charged ion will be smaller because the protons in the nucleus attract the electrons more strongly, whereas a negatively charged ion will be larger because the extra electrons will shield each other from the positive charge of the nucleus.
In this case, we can compare the radii of I- and Br-. The element bromine (Br) has a higher atomic number than iodine (I), meaning it has more electrons and a larger nucleus. However, Br- is a negatively charged ion, while I- is a neutral atom. The extra electrons in Br- will shield each other from the positive charge of the nucleus, making Br- larger than I-.
Therefore, the smallest radius among the choices is B. I-.
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Time Left 98 minutes Item 9: Question The conversion of lodocyclohexane to cyclohexene occurs via the following 2-step mechanism H H H H H + --- 0 1 H H H H H This conversion of lodocyclohexane to cyclohexene would be classified as a Ny reaction Submit Submit and Next elimination substitution Mark this question for later review addidtion Skip to Previous Skip to Next →
An elimination reaction would be the conversion carbon of lodocyclohexane to cyclohexene. An elimination reaction is a chemical process that involves the removal of two substituents.
from the same carbon molecule, resulting in the production of a double bond. Lodocyclohexane is transformed to cyclohexene in two steps by the removal of two substituents, culminating in the creation of a double bond. This process is unique to elimination reactions, as opposed to substitution reactions, which entail the substitution of one substituent with another.double bond. Lodocyclohexane is transformed to cyclohexene in two steps by the removal of two substituents, culminating in the creation of a double bond.l the substitution of one substituent with another.double bond. Lodocyclohexane is transformed to cyclohexene in two steps by the removal of two substituents,.
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assuming that the effects of the relative strengths of different types of electron repultsions given in the background information are considerably more important for bond angles of
An AB3N2 molecule has trigonal bipyramidal electron domain geometry (electron pair geometry).
This means the 2 of the electron pairs are axial (up and down).
The other 3 pairs point towards equitorial positions.
Since there are 2 non-bonding pairs of electrons, to minimize repulsion, these non-bonding pairs assume an equatorial position, and form a T-shaped molecular geometry
What is geometry?
Originally developed to model the physical world, geometry has applications in almost all sciences, as well as in art, architecture, and other activities related to graphics.Geometry also has applications in apparently unrelated areas of mathematics. For example, the methods of algebraic geometry are central to Wiles' proof of Fermat's Last Theorem, a problem that was stated in terms of elementary arithmetic and remained unsolved for several centuries.To know more about elements, click the link given below:
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What is the mass of 12 L of carbon monoxide (CO) gas at STP?
The mass of 12 L of carbon monoxide gas at STP is 32.16 g.
What is carbon monoxide?Carbon monoxide (CO) is a colorless, odorless, and tasteless gas that is highly toxic to humans and animals. It is a product of the incomplete combustion of carbon-based fuels, such as natural gas, coal, wood, and gasoline. Carbon monoxide poisoning occurs when the gas builds up in an enclosed space and is inhaled. Symptoms of carbon monoxide poisoning include headache, nausea, dizziness, and confusion.
The mass of 12 L of carbon monoxide gas at STP can be calculated using the ideal gas law. The ideal gas law states that the product of the
pressure (P),
volume (V),
and temperature (T) of a gas is equal to the mass (m) of the gas multiplied by the universal gas constant (R).
The equation for the ideal gas law is PV = nRT; where n is the number of moles of gas.
At STP, the pressure is 1 atm, the temperature is 273 K, and the universal gas constant is 8.314 J/mol·K. The molar mass of carbon monoxide (CO) is 28.01 g/mol.
Therefore, the mass of 12 L of carbon monoxide gas at STP can be calculated as follows:
m = (12 L)(1 atm)(273 K) / (8.314 J/mol·K)
m = 32.16 g
Therefore, the mass of 12 L of carbon monoxide gas at STP is 32.16 g.
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Which of the following steps would be required to convert between the masses of any two substances involved in the same chemical reaction?
The following steps would be chemical bonding,1. Calculate the molar mass of each substance.2. Calculate the number of moles of each substance.
What is the chemical bonding ?
Chemical bonding is the process of forming chemical bonds between two atoms.Atoms are held together by forces called chemical bonds to form compounds.. Chemical bonds can be covalent, ionic, or metallic. Covalent bonds involve atoms sharing electrons, while ionic bonds involve the transfer of electrons from one atom to another. Metallic bonds, on the other hand, involve the sharing of electrons between metal atoms. The type of bond formed depends on the electronegativity of the atoms involved, which is a measure of how strongly an atom attracts electrons. In general, atoms with higher electronegativity will form covalent bonds, while atoms with lower electronegativity will form ionic bonds.
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SEP Carrying out Investigations A student adds 1 L of water to 1 mol of sodium chloride. Will the result be a 1 M solution of sodium chloride and water ? Why or why not ?
Answer:
Yes, the result would be a 1 M solution of sodium chloride and water. This is because when 1 liter of water is added to 1 mole of sodium chloride, it will dissolve, resulting in a 1 M solution of sodium chloride and water.
identifying the 5 types of chemical reactions identify each of the reactions below as one of the 5 types of reactions (rxn): synthesis reaction decomposition reaction single replacement reaction double replacement reaction combustion reaction answer key
5 types of chemical reaction are as follows with example- decomposition reaction, single replacement reaction, double replacement reaction, combustion reaction.
1. Fe + O2 = FeO: This is a synthesis reaction. It involves the formation of a new compound (FeO) from simpler reactants (Fe and O2).
2. 2H2O2 = 2H2O + O2: This is a decomposition reaction. It involves the breakdown of a more complex compound (H2O2) into simpler products (H2O and O2).
3. Zn + CuSO4 = ZnSO4 + Cu: This is a single replacement reaction. It includes swapping out one ingredient in a compound for another. In this case, Zn replaces Cu in the compound CuSO4.
4. Fe(NO3)2 + K2Cr2O7 = FeCr2O7 + 2KNO3: This is a double replacement reaction. It involves the exchange of positive ions between two compounds to form two new compounds.
5. CH4 + 2O2 = CO2 + 2H2O + heat: This is a combustion reaction. It involves the burning of a hydrocarbon (CH4) in the presence of oxygen to produce carbon dioxide, water, and heat.
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In the winter, a heated home in the Northeast might be maintained at a temperature of 67 °F. What is this
temperature on the Celsius and Kelvin scales?
(Round your answer to the nearest whole number.)
°C
K
which of the following is a conclusion? which of the following is a conclusion? the candle needs oxygen to burn. the candle is 3.0 cm long. the mass of the candle is ten grams. the candle material melts when heated.
I've come to the conclusion that a candle needs oxygen to burn. The last paragraph of a research paper, essay, or article should have a conclusion that restates the thesis statement.
A conclusion consists of what?The last paragraph of a research paper, essay, or article should have a conclusion that restates the thesis statement. Your thesis should be restated in the conclusion paragraph, together with a summary of the major points you made in favor of it throughout the body of the essay and a statement of how you ultimately felt about it.The concluding paragraph or sentence of your thesis, as well as a summary of the main arguments you wanted to make in your thesis, make up the conclusion sample.The last paragraph of a research paper, essay, or article should have a conclusion that restates the thesis statement. Your thesis should be restated in the conclusion paragraph, which should also include a summary of the major supporting concepts you've covered in the paper.To learn more about conclusion refer to:
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if you use compressed air to dispense a keg on a system where the gas comes into contact with the beer, which of the following will happen?
If we use the compressed air to dispense keg on a system where gas comes in contact with the beer, we get the ton of foam.
The keg is round metal or the wooden container that is used to store the beer. The compressed air is the form of the stored energy. This energy is used to function the machinery equipment or the process. The compressed air is used in the manufacture of some devices. The compressed air is a gas under the high pressure.
Thus, we get ton of foams if compressed air to dispense keg on a system where gas comes in contact with the beer.
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Density is a physical property that relates the mass of a substance to its volume.
Calculate the density, in g/mL, of a liquid that has a mass of 0.125 g and a volume of 0.000225 L.
density:
Calculate the volume in milliliters of a 4.91-g sample of a solid with a density of 3.41 g/mL.
volume:
Calculate the mass of a 0.267-mL sample of a liquid with a density of 0.660 g/mL.
mass:
Answer:
0.177 g
Explanation:
To calculate the density of a liquid, the formula is: density = mass / volume
In this case, the mass is 0.125 g and the volume is 0.000225 L. So the density would be:
density = 0.125 g / 0.000225 L = 555.55 g/mL
To calculate the volume in milliliters of a solid with a known density, the formula is: volume = mass / density
In this case, the mass is 4.91 g and the density is 3.41 g/mL. To convert liters to milliliters, you must multiply by 1000.
volume = 4.91 g / 3.41 g/mL * 1000 mL/L = 1444.85 ml
To calculate the mass of a liquid with a known density, the formula is: mass = density x volume
In this case, the density is 0.660 g/mL and the volume is 0.267 mL.
mass = 0.660 g/mL x 0.267 mL = 0.177 g
Calculate the mass of a solid substance in grams, which occupies a volume of 2 and the density 4 gm * L ^ - 1
The mass of a solid substance which occupies a volume of 2L and has a density of 4g/L is 8 grams.
How to calculate mass?Density refers to the measurement of the amount of mass per unit of volume.
In order to calculate density, you need to know the mass and volume of the item. The formula for density is:
density = mass/volume
According to this question, a solid substance occupies a volume of 2 litres and a density of 4g/L. The mass can be calculated as follows:
4g/L = mass/2L
mass = 8 grams
Therefore, 8 grams is the mass of the solid substance.
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identify the copolymer. group of answer choices polystyrene polypropylene polyethylene nylon 6,6 polyvinyl chloride
Polystyrene is the copolymer. A copolymer is a polymer that results from the linking of two (or more) different types of monomers along a single polymer chain.
What is the purpose of a copolymer?Copolymerization is a process used to alter the qualities of manufactured plastics to satisfy specific requirements, such as lowering the glass transition temperature, modifying the glass transition temperature, regulating the wetting properties, or raising solubility. The process is known as rubber toughening, and it involves enhancing mechanical qualities.
A polymer composed of two or more monomer species is called a copolymer. Copolymers are numerous, widely used polymers in commerce. Nettle rubber, acrylonitrile butadiene styrene, and polyethylene-vinyl acetate (PEVA) are some examples (ABS).
A copolymer is a polymer that is created when two (or more) different types of monomers are bonded together in a single polymer chain, as opposed to a homopolymer, which uses only one monomer. Copolymers can be made in four different fundamental ways: randomly, alternately, blockly, and graftly.
Therefore the correct answer is polystyrene .
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complete the following road map for converting grams of a to grams of b where a and b are two species in a chemical reaction.
The formulas for converting grams to grams of b in situations where a and b are two species involved in a chemical reaction are as follows:
What is the road map for converting grams to grams?Write the balanced chemical equation for the reaction of converting species A to species B.Determine the stoichiometric coefficient of species B in the balanced equation.Use the molar mass of species B to convert the number of moles of B to grams.Use the balanced chemical equation and the molar ratios to determine the number of moles of B produced from a given number of moles of A.Use the molar mass of species A to convert the number of moles of A to grams.Use the stoichiometry from the balanced equation to determine the number of moles of B produced from a given number of moles of A.Use the molar mass of species B to convert the number of moles of B to grams.Compare the initial amount of A and the final amount of B to check if the reaction was complete or not.Example:A + B → C + Dmolar mass of B = 42 g/mol2 moles of B are produced for every 1 mole of A.5g of A is reacted.10g of B is produced.To learn more about reaction refer:
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Which of the following would be expected to behave as a nucleophile? Which of the following would be expected to behave as a nucleophile?-OH +NH_4 Cl- H-A B D Ea). A, B, and D onlyb). B onlyc). A and D onlyd). A, D, and E only
c). A and D only, A and D solely anticipated nucleophile behaviour, because. A chemical species known as a nucleophile can contribute an electron pair to the formation of a bond.
We can observe a negative charge on -SH, which indicates that it possesses an electron pair. Due to the lone pair of electrons that may be supplied to form a covalent bond on the N atom of ammonia (NH3), it is also a nucleophile.
Therefore, the only options for a response would be A and B.
We can see that C and D have positive charges on them, indicating that they lack electrons themselves and are unable to give them to other species. They cannot be categorised as nucleophiles as a result. A nucleophile is a reactant that contributes two electrons to the formation of a new covalent bond (i.e. a Lewis base).
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What structural features do you think contribute to a high thermal conductivity?
HURRY PLEASE!!!!
The structural features which contributes to a high thermal conductivity are the direction of travel of heat and the nature of materials.
What is Thermal conductivity?This is referred to as a measure of its ability to conduct heat or current and it is dependent on some factors such as the nature of the materials.
For example , metals conduct heat and electricity easily because the materials allow free electrons to move between the atoms and also the direction of travel of heat which is towards them is also a factor in this regard.
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