A hydrogen bond is weak force between atoms in a molecule, but is of enormous importance in physiology.
What is Hydrogen Bonding?
Dipole-dipole interactions between molecules that do not include a covalent bond to a hydrogen atom are known as hydrogen bonds. The attraction between two incredibly electronegative atoms, such N, O, or F, and a hydrogen atom that is covalently bonded to one of them causes it to occur.
Any electronegative atom, such as oxygen, chlorine, or fluorine, may make up the other atom, whereas one of the atoms is hydrogen. Between molecules or between two different molecules, hydrogen bonds can develop between the atoms.
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When each of the following equilibria is disturbed by increasing the pressure as a result of decreasing the volume, does the number of moles of reaction products increase, decrease, or remain the same?
1. CO(g) + H2O(g) ⇌ CO2(g) + H2(g)
2. 2CO(g) ⇌ C(s) + CO2(g)
3. N2O4(g) ⇌ 2NO2(g)
1. CO(g) + H₂O(g) ⇌ CO₂(g) + H₂(g), the number of moles of products remains the same.
2. 2CO(g) ⇌ C(s) + CO₂(g), the number of moles of products increase.
3. N₂O₄(g) ⇌ 2NO₂(g), the number of moles of products decrease.
What is equilibrium?Any change in the equilibrium can be studied on the basis of Le-Chatelier's principle. This principle can describe that for any change in the variables of the reaction, the equilibrium shift in the direction to minimize the effect of that change.
CO(g) + H₂O(g) ⇌ CO₂(g) + H₂(g)
On increasing the pressure, the equilibrium shift in direction where decrease in pressure is occurring, the reaction will shift in no direction because the number of gaseous moles is the same on both sides. Therefore, no increase in the number of moles of products.
2CO(g) ⇌ C(s) + CO₂(g)
On increasing the pressure, the reaction will shift in a forward direction because the number of gaseous moles is less on the product sides. Therefore, increase in the number of moles of products.
N₂O₄(g) ⇌ 2NO₂(g)
On increasing the pressure, the reaction will shift in a backward direction because the number of gaseous moles is less on reactant side both sides. Therefore, decrease in the number of moles of products.
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11.25 considering the organic compound, classify each of the following transformations, some of which may be unfamiliar, as an oxidation, a reduction, or neither. for those that are oxidations or reductions, tell how many electrons are gained or lost.
The reaction given above is as follows:
CH₄ + Br → CH₃Br
This reaction is categorized under halogenation reaction.
Halogenation reaction refers to a type of chemical reaction that involves the replacement of a halogen atom with another substance wherein the halogen atom ends up as a part of that substance or a compound. In general, during the halogenation reaction, there is usually an addition of one or more halogens to the substance occurs.
Halogenation reaction is the addition of halogen atoms to a π‐bond system. For example, the addition of bromine to ethene produces the substituted alkane known as 1,2‐dibromoethane.
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A student determines that a gas has a density of 1.948gL at a pressure of 748.1 mmHg and a temperature of 22.9 C. What is molar mass of gas?
Answer: 48.0 g/mol
Explanation:
The formula for molar mass of a gas is M=(RTd)/P, where R is the gas constant, d is density, T is temperature in kelvin, and P is pressure in atm.
First, we must convert mmHg to atm, 748.1/760= 0.9843 atm.
Then, we must convert C to K, 22.9+293=295.9K.
Lastly, we can plug in our values:
M=(1.948x0.082x295.9)/0.9843=48.0g/mol
give reason why using a seperate dropper for each stock solution in reagent bottle
The reason why a separate dropper is used for each stock solution in reagent bottle is so as to prevent contamination of the reagents.
What is a Dropper?This is referred to as a short glass or plastic tube fitted with a rubber bulb which are found in reagents and is used to measure liquids by drops in the laboratory.
It is best for a separate dropper to be used for each stock solution in reagent bottle so as to prevent contamination of the reagents. This helps to ensure that the experiments which are performed are very accurate which is therefore the reason why it was chosen as the correct choice.
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This term is used to describe the molecules that are being studied in a thermodynamic reaction.
-System
-Surrounding
-Container
-Vessel
The term used to describe the molecules that are being studied in a thermodynamic reaction is system.
Thermodynamics refers to the study of the relations between heat, work, temperature, and energy. The laws of thermodynamics define the way energy in a system change and whether the system can perform useful work on its surroundings. Thermodynamic reaction or control is a reaction in which the product ratio is determined by the relative stability of the products. Thermodynamic stability occurs when a system is in its lowest energy state, or in chemical equilibrium with its environment. Hence, thermodynamic studies study molecules within a system.
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what must happen for a chemical reaction to take place; what happens to atoms in a chemical reaction; the substances that start a chemical reaction are called; a substance that is formed by a chemical reaction is called a; why do chemical reactions happen book; chemical changes of matter; 20 examples of chemical changes; importance of chemical reactions
When the chemical reaction takes place , the reactant will react with each other , the bond between the atom are broken and the new bond formation take place to form a new product.
When the chemical reaction happens , the reactant bond are broken and the formation of the new bonds are formed to make the new product. the substances that start a chemical reaction are called as the reactants. a substance that is formed by a chemical reaction is called as the product.
The reason for the chemical reactions occur is to the formation of the new substances and the energy change.
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Can anyone help with an enthalpy cycle diagram to show these workings out?
6C(s) + 6H2(g) + 3O2(g) → C6H12O6(s) Hf = -1086.4 kJ mol-1
e) 6 C(s) + 6 O₂(g) ⇒ 6 CO₂(g) ΔHc = 6*(-395) = - 2,370 kJ/mol
6 H₂(g) + 3 O₂(g) ⇒ 6 H₂O(l) ΔHc = 6*(-269.4) = -1,616. kJ/mol
6 CO₂(g) + 6 H₂O(l) ⇒ 6 O₂(g) + C₆H₁₂O₆(s) ΔHc = -1*(-2900) = 2900 kJ/mol
__________________________________________________________
6 C(s) + 6 H₂(g) + 3 O₂(g) ⇒ C₆H₁₂O₆(s) ΔHf = -1086.4 kJ/mol
The enthalpy diagram for the formation of C₆H₁₂O₆ is shown in the image attached.
What is the Hess law?We know that the Hess law is the law that can be used to show the principle of the constant heat summation. The implication of this law is that the total heat that is involved in a number of the process would involves the summation of all the heats of the processes that we have.
In this case, we have the compound that has been formed in this case as C₆H₁₂O₆. We can see that there were about three process that went on in the formation of the compound and we need to find the enthalpy of formation of the compound which is the summation of the enthalpies of of all the processes involved.
The enthalpy cycles are;
6 C(s) + 6 O₂(g) ⇒ 6 CO₂(g) ΔHc = 6*(-395) = - 2,370 kJ/mol
6 H₂(g) + 3 O₂(g) ⇒ 6 H₂O(l) ΔHc = 6*(-269.4) = -1,616. kJ/mol
6 CO₂(g) + 6 H₂O(l) ⇒ 6 O₂(g) + C₆H₁₂O₆(s) ΔHc = -1*(-2900) = 2900 kJ/mol
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Activity 1. How many moles of Ca(OH)₂ are required to react with 1.36 mol of H3PO4 to produce Ca3(PO4)2 according to the equation; 3Ca(OH)₂ + 2H3PO4 Ca3(PO4)2 + 6H₂O?
Answer:2.04moles
Explanation:
3Ca(OH)₂ + 2H3PO4 →Ca3(PO4)2 + 6H₂O
n(Ca(OH)₂):n(H₃PO₄)
3 :2
X:1.6
1.6/2)x3
2.4 moles
Indicate the concentration of each ion or molecule present in the following solution.
A mixture of 45.0mL of 0.272M NaCl and 65.0mL of 0.0247M (NH4)2CO3. Assume that the volumes are additive. Express your answer numerically using three significant figures. If there is more than one answer, separate them by a comma.
The concentration of Na+ ion = number of moles/ volume = 45*0.272/110 = 0.111 M
The concentration of Cl- ion = 45*0.272/110 = 0.111 M
The concentration of NH4+ ion = 2*65*0.0247/110= 0.0292M
The concentration of CO32- ion = 65*0.0247/110= 0.0146 M
An ion is an atom or a group of atoms wherein the number of electrons isn't like the number of protons. If the wide variety of electrons is less than the wide variety of protons the practical is a positive ion, also referred to as a cation.
By means of definition, an ion is an electrically charged particle produced through either casting off electrons from a neutral atom to provide a high quality ion or including electrons to a impartial atom to offer a negative ion. Whilst an ion is formed, the wide variety of protons does not change.
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The concentration Na+ , Cl-,NH4+,CO32- are respectively 0.111M, 0.111M, 0.029M, 0.0146M
The concentration of Na+ ion = number of moles/ volume = 45*0.272/110 = 0.111 M
The concentration of Cl- ion = 45*0.272/110 = 0.111 M
The concentration of NH4+ ion = 2*65*0.0247/110= 0.0292M
The concentration of CO32- ion = 65*0.0247/110= 0.0146 M
Concentration:
Concentration is the component's abundance divided by the total volume of the mixture. There are several types of mathematical descriptions, such as mass concentration, molarity, number concentration, and volume concentration.
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Which represents the correct equilibrium constant expression for the reaction below?
K(eq) equals [Cu+2] / [Ag+]2 where [Cu+2] is the product concentration and [Ag+] is the reactant concentration. The activity of pure liquid and solid is assumed to be 1.
What is a good instance of reactant concentration?As an illustration, when a tiny piece of sodium and iron metal was exposed to air, the sodium entirely reacts overnight while the iron has no effect. Calcium and sodium, two active metals, react to produce hydrogen gas and just a base. They both react to water.
What in a reaction is concentration?The amount of a material in a certain area is referred to as concentration in chemistry. Another definition states that concentrations is the ratio of a solution's solute to its entire solution or solvent. Mass per unit mass is typically used to express concentration.
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Can oxygen and sulfur form an ionic bond?
The oxygen–sulfur system would therefore have the strongest ionic character. A difference in electronegativity of 1.0 would result from this.
Can oxygen and sulfur combine?Sulfur dioxide is created when sulfur and oxygen react. A molecular compound is the end result of nonmetal reactions. The nonmetal reactants frequently mix in various ratios to yield various products. Sulfur trioxide is created when oxygen and sulfur interact.
Do oxygen and sulfur have a polar bond?sulfur and oxygen atoms have different levels of electronegativity, SO2 is polar in nature. The polarity of the molecule will increase with the difference in electronegativity.
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A) Provide a complete mechanism for the above Friedel-Crafts Reaction. Pay close attention to details, including lone pairs, formal charges and the use of curved arrows.
The Lewis acid and the chlorine atom of the acid chloride form a complex during the Friedel-Crafts acylation reaction. Cleaving the complex's C-Cl bond produces an acylium ion. The acylium ion is resonance stabilized and has a positive charge on the carbon atom.
The term "Friedel-Crafts Alkylation" describes the substitution of an alkyl group for an aromatic proton. This is accomplished by using a carbocation to conduct an electrophilic attack on the aromatic ring. Alkyl halides are used as reactants in the Friedel-Crafts alkylation reaction, which produces alkylbenzenes.
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Which is a nonpolar molecule containing a polar covalent bond?
Despite having polar bonds, the molecule of carbon dioxide (CO2) is nonpolar. The linear structure of CO2 is. Due to their identical amplitude and opposite polarity, the distinct bond dipoles cancel one another.
Does water have polar covalent connections but is it a nonpolar molecule?A polar covalent molecule is water.
A water molecule has two poles: a positive charge on the hydrogen pole (side) and a negative charge on the oxygen pole due to the unequal sharing of electrons between the atoms and the asymmetrical form of the molecule (side).
Which chemical from the list below has polar covalent bonds? HCl, Co N2, NH3, and NH4+?CO and NH3; NH4+ and HCl; and Polar covalent bonds are present in all of the species.
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construct the lewis structure of no2no2 . draw the molecule by placing atoms on the grid and connecting them with bonds. include all lone pairs of electrons and nonbonding electrons.
Although NO2 is a bent molecule, when you take an electron out of it to get NO2+, the molecule becomes linear as a result of the loss of a lone electron.
What is the number of electrons in the Lewis structure of NO2 ?The Lewis structure of NO2 has 18 valence electrons in total. In the NO2-Lewis structure, nitrogen is the least electronegative atom, hence it is placed in the middle of the structure.
Why do no2's 18 valence electrons exist?In the nitrite ion, we have 5 valence electrons for nitrogen, 6 for oxygen, but since there are 2 oxygen atoms, we will double that number by 2, plus 1 for this valence electron up top, giving us a total of 18 valence electrons for the Lewis structure of the nitrite ion.
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in an acidic solution, the hydroxide ion concentration will be than the hydronium ion concentration; in a basic solution, the hydroxide ion concentration will be than the hydronium ion concentration. t/f
The statement that in an acidic solution, the hydroxide ion concentration is lesser than the hydronium ion concentration, and vice versa in basic solution is true.
Acidic solutions are classified as acids due to low pH and high concentration of hydronium ions. Hence, in acidic solutions, the concentration of hydronium ions is greater than that of hydroxide ions. The compounds or solutions are classified as bases and acids depending upon the level of hydronium or hydroxide ions.
An acidic solution possesses a lower pH while a basic solution has a higher pH value.The hydronium ion is an important factor when dealing with chemical reactions that occur in aqueous solutions. Its concentration relative to hydroxide is a direct measure of the pH of a solution. The pH of a solution depends on its hydronium concentration.
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Which of the following physical properties would be expected to decrease as intermolecular forces increase? A. critical temperature B. boiling point C. vapor pressure
D. heat of vaporization E. none of these properties would decrease
On decreasing the intermolecular forces, the critical temperature increases. So, option A is correct.
Critical temperature is the temperature above which a gas cannot be get liquified. Now, by this hypothesis we mean that the molecules of the gas come closer to each other and thus molecules attract towards each other. Intermolecular forces hold the molecules to each other . They are responsible for keeping a solid a solid and a liquid a liquid. With weak IMF the material remains a gas, like oxygen and nitrogen in our air. The greater force that is applied, the more energy is needed to separate the molecules.
So, more the magnitude of intermolecular force more will be the tendency of a gas to get easily liquify and the critical temperature will substantially get increased
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What isotope has 26 protons 24 electrons and 32 neutrons?; Which element has atoms with 26 protons?; What element has 26 protons 28 neutrons 24 electrons?; What is the element with 26 protons and 23 electrons?
The isotope has 26 protons 24 electrons and 32 neutrons is ⁵⁸Fe. element has 26 protons 28 neutrons 24 electrons is Fe. the element with 26 protons and 23 electrons is Fe.
The atomic number of iron is 26 , there are 4 isotopes of the iron is given as follows :
Fe = atomic number = 26 => 26 electrons , 26 protons, 26 neutrons.
four isotopes are as follows :
1) ⁵⁴Fe it contains = 28 neutrons.
2) ⁵⁶Fe it contains = 30 neutrons.
3) ⁵⁷Fe it contains = 31 neutrons.
4) ⁵⁸Fe it contains = 32 neutrons.
Thus, ⁵⁸Fe is the isotope has 26 protons 24 electrons and 32 neutrons.
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write the formula of the conjugate base of ch3cooh. click in the answer box to activate the palette.
The formula of the conjugate base of CH3COOH is CH3COO−. Conjugate base has one less H atom and one more - charge than the acid that formed it.
What is acetic acid?Acetic acid is organic compound with the formula CH3COOH. Acetic acid is an acidic, colorless liquid and organic compound with the chemical formula of CH₃COOH. Vinegar is 4% acetic acid by volume, therefore making acetic acid the main component of vinegar apart from water and other elements.
A dilute solution of acetic acid that is produced by fermentation and oxidation of natural carbohydrates is called vinegar whereas salt, ester, or acylal of acetic acid is called acetate.
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which of the following can be classified as small fires that need immediate attention before they get larger and more serious?
Small fires that need immediate attention before they get larger and become more serious : Incipient fires.
What do you understand by Incipient fires?Incipient refers to a fire that has just begun and is of size that has poor visibility, smoke inhalation and high temperatures.
It has flames that are small and not widespread. Incipient fires has smoke that allows for visibility in the room. The heat emitted from the flame is quite low.
Things that should be done when responding to incipient stage fire: Sound fire alarm and call the fire department, identify a safe evacuation path and do not allow the fire, heat or smoke to come between you and the evacuation path.
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This is how manganese appears in the periodic table.
25
Mn
Manganese
54.94
What is the arrow is pointing to?
period symbol of manganese
isotope symbol of manganese
group symbol of manganese
Chemical symbol of manganese
The arrow is pointing to the symbol of the element. Option D
How do elements appear?We know that we arrange the elements that we have in the periodic table of the elements and that the properties of the elements could be revealed by the intricacy of the arrangement of the elements.
The entry of the elements in the periodic table does have three components and these are;
The symbol of the element
The mass number
The atomic number.
The arrow is showing what the chemical symbol of the manganese is.
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What are 5 examples of compound complex sentences?; How do you identify simple compound and complex sentences?; What is complex and compound sentence?; How do I know what type of sentence?
Compound complex sentences : A sentence having two or more coordinate independent clauses and one or more dependent clauses.
Simple compound : A simple sentence consists of just one clause.
What are 5 examples of complex sentences?A clause with one or more dependent clauses and two or more coordinate independent clauses.
Examples of Complex Sentences :
Because he was late again, he would be docked a day's pay. While I am a passionate basketball fan, I prefer football. Although she was considered smart, she failed all her exams. Whenever it rains, I like to wear my blue coat.While playing football, the ball thrown by my friend hit the boy crossing the street.What are 5 examples of simple sentences?A simple sentence just has one clause.
Examples of Simple Sentences :
Joe waited for the train. "Joe" = subject, "waited" = verb.The train was late. "The train" = subject, "was" = verb.Mary and Samantha took the bus. ...I looked for Mary and Samantha at the bus station. ...Mary and Samantha arrived at the bus station early but waited until noon for the bus.Learn more about Compound & simple sentences refer to :
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Which of the following is not a result of special additives blended into the monomer liquid and polymer powders?
longer shelf life.
color stability.
maximum flexibility.
maximum durability.
The following is not a result of special additives blended into the monomer liquid and polymer powders is maximum flexibility.
A monomer is the molecule that will combine to another identical monomer and form the polymers. A monomer is the simplest unit of the polymer. A polymer is the natural or it can be synthetic substance that is composed of the very large molecules and is called as macromolecules. A polymer is composed of the repeating units. the additive blended to the monomer is not the results in the maximum flexibility.
Thus, the maximum flexibility is not a result of special additives blended into the monomer liquid and polymer powders
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what is the charge of each of the metal atoms in the following coordination complexes or complex ions?
The coordination complex K[Fe(CN)2(H2O)4] contains one K from outside coordination sphere, which indicates the oxidation state of Fe. Because there are two of them, overall payment on CN has an oxidation
What is a coordination compound, for instance?A coordination entity is a chemical complex with a core ion or atom that is linked to a certain number of other atoms, molecules, or ions. These coordination entities include, as some examples
Why is coordination used to describe complicated compounds?Chemical bonds, such as covalent bonds, ionic bonds, and coordinate bonds, connect the core atom and the ligands. As its structure includes coordinate bonds, a complex chemical is also known as a coordinate compound.
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for this reaction it was observed that the first three half-lives were 12.5 h, 25 h, and 50 h when a
Concentration of A after 50 hours = 0.1013 M.
Given that initial concentration of A = 1.621 M
After first half life is after 12.5 hours, concentration is reduced to 0.8105 M.
Concentration of A after 12.5 hours is 0.8105 M
After second half life ( ie 25 hours = 2*12.5 h), concentration of A is reduced to 0.4053 M
After 3rd half life (ie 37.5 hours = 3*12.5 hours) , concentration of A is reduced to 0.2026 M ( Half of 0.4053 M)
Therefore Concentration of A after 50 hours = 0.2026 M
After 4th half life (ie 50 hours = 4*12.5 hours), concentration of A is reduced to 0.1013 M ( Half of 0.2026 M)
Therefore concentration of A after 50 hours = 0.1013 M.
Concentration is the ratio of a constituent's abundance to the mixture's overall volume. The concentration can refer to any form of chemical mixture, but is most usually used to describe the solutes and solvents in solutions. There are several different types of mathematical descriptions: mass concentration, molar concentration, number concentration, and volume concentration.
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Finish the pre-laboratory assignments before the laboratory experiment. Read the manual of this experiment and complete the following questions. 1. a. Identify oxidation-reduction reactions in the copper cycle experiment. For each oxidation-reduction reaction, write half reactions to show what is oxidized and what is reduced. b. Identify acid-base reactions and precipitation reactions in the copper cycle experiment. Write equations for the corresponding reactions. b. How many mL of 3.0 M NAOH are required to neutralize 4.0 mL of 16.0 M HNO2?
Oxidation-reduction reactions in the copper cycle experiment. For each oxidation-reduction reaction, half reactions to show copper is oxidized and copper is reduced.
Any chemical reaction in which the oxidation number of a molecule, atom, or ion changes by acquiring or losing an electron is referred to as an oxidation-reduction reaction. Some of the fundamental processes of life, such as photosynthesis, respiration, combustion, and corrosion or rusting, depend on redox reactions.
The copper gets oxidized and in the fourth step, the copper gets reduced.
Acid - base reaction
In a chemical reaction known as neutralization or neutralisation, an acid and a base interact quantitatively. By neutralizing a reaction in water, surplus hydrogen or hydroxide ions are removed from the solution.
CuO(s) + H₂SO₄(aq) -->CuSO₄(aq) + H₂O(l)
precipitation reaction
Cu(NO₃)₂(aq) + 2NAOH(aq) -->Cu(OH)₂ + 2NANO₃
Thus, 21.3 mL of NaOH is required to react with 4 mL of 16 M HNO3 H N O 3 .
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which statement about mass spectroscopy below is not true. group of answer choices a mass spectrum ionizes the molecule. ions in the mass spectrum can fragment. a mass spectrum can only see ions. certain functional groups have predictable fragmentation patterns. ions are separated by their hydrophobicity.
The fourth option is correct . Ions are separated by their hydrophobicity . Since, they are separated according to mass to charge ratio.
The exit of a small-scale chromatography column can be coupled directly to the input of a mass spectrometer using nano electrospray ionization. A needle with a 10-15 um point is used to channel the flow from the column. The ions are sorted and separated based on mass-to-charge (m/z) ratios after being ionized.
The molecular weight of the particles can be ascertained using mass spectrometry (MS), an analytical technique that separates ionized particles like atoms, molecules, and clusters by using variations in the ratios of their charges to their respective masses (mass/charge; m/z).
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What mass of ilmenite (in grams) is required if you wish to obtain 950 g of titanium?
299.65 g Ti mass of ilmenite (in grams) is required if you wish to obtain 950 g of titanium.
The molar mass of ilmenite is 151.71 g mol1.
This indicates that each mole of ilmenite will weigh 151.71 g.
One mole of ilmenite will also include one mole of iron, 1Fe, one mole of titanium, 1Ti, and three moles of oxygen, 3O, as you can see by looking at the compound's chemical formula.
Since the molar mass of titanium is 47.857 g mol 1, 151.71 g of ilmenite will contain 47.857 g of titanium. It implies that 950.0 g of ilmenite will contain
= 950 * 47.857 / 151.71
= 299.65 g Ti
if you acquire 47.857 g of titanium for every g of ilmenite.
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To get 950 g of titanium, you need a mass of ilmenite containing 299.65 g of titanium.
Ilmenite has a molar mass of 151.71 g mol1.
This suggests that ilmenite will weigh 151.71 g per mole.
As can be seen from the chemical formula of the compound, one mole of ilmenite will also include one mole of iron, 1Fe, one mole of titanium, 1Ti, and three moles of oxygen, 3O.
151.71 g of ilmenite will contain 47.857 g of titanium since titanium has a molar mass of 47.857 g mol 1. According to the statement, 950.0 g of ilmenite will
= 950 * 47.857 / 151.71
= 299.65 g Ti
if each gram of ilmenite yields 47.857 grams of titanium.
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g draw all possible stereoisomers of stilbene dibromide, making sure to draw each stereoisomer only once. id all pairs of enantiomers and any meso compounds. assign r/s configuration to all stereocenters on your drawings.
Stilbene dibromide includes (1R,2S)-1,2-dibromo-1,2-diphenylethane, (1R,2R)-1,2-dibromo-1,2-diphenylethane, (1S,2S)- It has three stereoisomers. 1,2-dibromo-1,2-diphenylethane.
Bromination of trans-stilbene primarily yields meso-1,2-dibromo-1,2-diphenylethane. Electrophilic bromine addition reaction. Stilbenes can exist as both trans and cis stereoisomers, but they naturally occur predominantly as the trans isomer due to their greater thermodynamic stability compared to the cis isomer.
If a molecule has two stereocenters there should be four possible stereoisomers. If a molecule has 3 stereocenters, there should be up to 8 stereoisomers. Therefore, the maximum number of stereoisomers for a given configuration is 2n. where n is the number of chiral centers.
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open the phase diagram for co2 given in the introduction again. use the phase diagram for co2 in the interactive activity and determine which of the following statements are correct.
The phase diagram of CO2 has a melting curve that slopes up and to the right, in contrast to the phase diagram of water, which has a more conventional shape. It is impossible for liquid CO2 to exist at pressures lower than 5.11 atm because the triple point is 5.11 atm and 56.6 °C.
Due to the fact that ice is less thick than liquid water, the phase diagram of water has an odd melting point that drops with pressure. Carbon dioxide cannot exist as a liquid at atmospheric pressure, according to the phase diagram of the gas. Thus, gaseous carbon dioxide directly sublimes from solid carbon dioxide.
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what is the mass of 0.015 moles of na2so4
The mass of 0.015 moles of na2so4 is 2.13 grams.
Define number of moles.
The ratio of a substance's given mass in a chemical reaction to the mass of one mole of that substance is the number of moles of that substance. A mole of any substance is equal to 6.023 1023, Avogadro's number.
Number of moles (n) = 0.015 mol
Molar mass of Na2SO4 = 142.04 g/mol
Required Mass (in g)
= Number of moles × Molar mass
= 0.015 mol × 142.04 g/mol
= 2.13 g
Therefore, the required mass is 2.13 g.
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