Answer:
.,....................k
The molarity (m) of a solution refers to
The molarity(m) of a solution means number of moles of solute by volume of solution in litres.
Molarity is the molar concentration of a solution measured in moles of solute per liter of solution. Solution molarity is the number of moles of solute dissolved in 1 liter of solution. To calculate the molarity of a solution, divide the moles of solute by the volume of the solution, expressed in liters.
Molarity is the amount of a substance in a given volume of solution. Molarity is defined as the number of moles of solute per liter of solution. Molarity is also called the molarity of a solution. Divide the moles of solute by the total volume of the solution in liters. The ratio of the volume occupied by a substance to the amount of substance, usually given at a specific temperature and pressure.
Learn more about Molarity here:-https://brainly.com/question/26873446
#SPJ1
HELP PLEASE URGENT!!!!!
WILL GIVE BRAINIEST.
(CORRECT ANSWERS ONLY!!!!)
6.0 mol NaOH can form 3.0 mol Na3PO4 while 9.0 mole H3PO4 can form 9.0 mol Na3PO4. What mass of Na3PO4 forms?
Na3PO4: 164 g/mol
[?]g Na3PO4
Round your answer to the ones place.
Answer:
Hope this is the answer you want from the question.
6.0 mol NaOH can form 3.0 mol Na3PO4 while 9.0 mole H3PO4 can form 9.0 mol Na3PO4.mass of Na3PO4 forms 164 g/mol.
What is mass ?A body's mass is an inherent quality. Prior to the discovery of the atom and particle physics, it was widely considered to be tied to the amount of matter in a physical body.
Simply put, mass is a measurement of a body's amount of matter. Matter is everything that has both volume and mass. Although mass cannot be seen, it can be measured or quantified. Not all matter is visible. Typically, mass is expressed in kilogrammes, etc.
The quantity of matter or substance that makes up a thing is known as its mass. The unit of measurement is the kilogramme, abbreviated as kg. It's crucial to keep in mind that mass differs from weight.
Thus, 6.0 mol NaOH can form 3.0 mol Na3PO4 while 9.0 mole H3PO4 can form 9.0 mol Na3PO4.mass of Na3PO4 forms 164 g/mol.
To learn more about the mass, follow the link;
https://brainly.com/question/19694949
#SPJ2
How does heat move? (6.P.3.1)
Group of answer choices
Heat always moves from the warmer substance to the cooler substance.
Heat always moves from the cooler substance to the warmer substance.
Heat always moves from the larger substance to the smaller substance.
Heat always moves from the smaller substance to the bigger substance.
The Heat move : Heat always moves from the warmer substance to the cooler substance.
The heat always moves from hotter to cooler object. when object are of different temperature comes in contact with the heat will transfer. heat always moves from cooler to hotter. this process is called as conduction. if you will touch something that is hot you will feel the heat. The heat moves in ways : conduction , convention and radiation. These are the three ways of heat transfer from one object to another object.
Thus, The Heat move : Heat always moves from the warmer substance to the cooler substance.
To learn more about heat here
https://brainly.com/question/1429452
#SPJ9
Since benzoin and meso-hydrobenzoin have similar melting points, how would you confirm that the product you obtained from this reaction is indeed meso-hydrobenzoin using only melting point techniques? describe briefly how you would carry out this experiment.
The products benzoin and meso-hydro benzoin melting points are same. Their temperature is 13341 degrees Celsius. Using the melting point method makes it challenging to directly determine. It would be necessary to determine the reaction's end product and then measure the melting point.
What does the melting point experiment aim to achieve?The thermal analysis that is most usually used to describe solid crystalline materials is melting point determination. It is used to identify solid crystalline chemicals and to assess their purity in research and development as well as in quality control in different industry areas.
The melting values of the products were between benzoin and meso-hydro benzoin 135 and 137, indicating that the molecule is likely benzoin because they are so similar to benzoin's melting points (135 to 137). Compared to hydroxybenzoic acid, benzoin has a melting point range that is closer to the finished product.
To know more about benzoin visit:
https://brainly.com/question/28480025
#SPJ4
Population and Water This activity will help you meet this educational goal: Content Standards—You will explain why scarcity and choice are basic economic problems faced by every society. Directions Read the instructions for this self-checked activity. Type in your response to each question, and check your answers. At the end of the activity, write a brief evaluation of your work. Activity Think about the video you watched earlier and answer these questions. Part A What was the scarce resource in the video?
Population and water are as the population increases the percentage of people without access to clean water will increase as well
Overpopulation will strain current water resources to their limits and cause an increase in water pollution and lead to an increase in civil and international conflict over existing water supplies and as the population increases the percentage of people without access to clean water will increase as well and in many urban areas water scarcity is already a reality and this leave many cities sorely unequipped for continued rapid population growth in the future
Know more about scarcity
https://brainly.com/question/19920929
#SPJ9
Consider the following descriptions of the equation above. Which is true?
Fe2O3 + 2Al => 2Fe + Al2O3
Considering the given equation, the statement which is true for the given equation is that it is a displacement reaction.
The correct option is C.
What are chemical reactions?Chemical reactions are changes that occur in substances that involve changes in their chemical properties and the formation of new substances with properties different from the original substances.
Some of the several types of chemical reactions include:
combination reactions - these are reactions in which two or more substances combine to form a single substance.
A + B ---> ABdisplacement reactions - these are reactions in which one element or radical replaces another element or radical in a compound
AB + C --> CB + Adecomposition reactions - these are reactions in which one substance decomposes to give two or more substances.
A ---> B + Cdouble decomposition reactions - these are reactions in which there is an exchange of positive and negative ions by two compounds when they react.
AB + CD ---> AD + CBLearn more about displacement reactions at: https://brainly.com/question/13935998
#SPJ1
Complete question:
Consider the following descriptions of the equation above. Which is true?
Fe₂O₃ + 2 Al ---> 2 Fe + Al₂O₃
a. it is a combination reaction
b. it is a decomposition reaction
c. it is a displacement reaction
d. it is a double decomposition reaction
How many oxygen atoms does the compound 2ca3(PO4)2 have?
Answer:2
Explanation:
Calculate empirical formula for each compound 0.2144 g N and 0.1224 g O
Empirical formula is N₂O
An empirical formula for a compound is the formula of a substance written with the smallest integer subscript
Here given data is
N = 0.2144 g
O = 0.1224 g
We have to calculate the empirical formula = ?
So mass of compound/moles
Empirical formula = 0.2144 g/14g/mol = 0.0153 mol
Empirical formula = 0.1224 g/16g/mol = 0.0076 mol
Then smallest mole value is 0.0076 mol
Divide the nitrogen mole by smallest value then
N = 2.0008
O = 1
Then take the closest whole number
Then the ratio is 2 : 1
So the empirical formula is N₂O
Know more about compound
https://brainly.com/question/13003878
#SPJ9
True or False: Coagulation uses an additive to make contaminants stick together.
True
False
According to the research, the correct answer is True. The statement ''Coagulation uses an additive to make contaminants stick together'' is true.
What is Coagulation?It is a chemical process of destabilization of the repulsive forces between colloidal particles, forming a gelatinous mass that traps (or binds) particles.
In this sense, to achieve that the repulsive forces disappear and that resistant and large flocs are formed, reagents and additives such as alumina, aluminous salts are used.
Therefore, we can conclude that according to the research, coagulation destabilizes the charges of the particles using additives so that the small suspended particles are able to stick to each other.
Learn more about coagulation here: https://brainly.com/question/13231640
#SPJ1
Predict if a reaction would occur when solutions of 0. 1 m rbbr and 0. 1 m nacl are combined. If you predict a reaction will occur, determine the net ionic equation for the reaction.
Here no reaction will occur when a solution of 0.1 m rbbr and 0.1 m NaCl are combined and no net net ionic equation applicable.
What is net ionic equation and why there is no reaction and hence no net ionic equation applicable?Net ionic equation is the combination of equations of reactants and products and combined they are called to be net ionic equation.We know it already that when two ionic compounds solution are combined their components ions may get exchange in double displacement reaction.The reaction that would be called double displacement reaction would be written as : Rbbr + NaCl = RbCl + Nabr , but this won't occur here.Actually in the combination no precipitate is formed as both of the ionic compouneds are getting dissolved that is both are soluble.Hence there is no reaction and no net ionic equation applicable when solutions 0.1 m rbbr and 0.1 m nacl are combined.To know more about reaction visit:
https://brainly.com/question/28984750
#SPJ4
A student is conducting a lab investing solutions. The student starts by adding a set amount of sugar to water. After stirring, all of the sugar has dissolved. The student adds more sugar but does not dissolve. He continues to stir, but the sugar will not dissolve. The student correctly concludes that the first amount of sugar added caused the solution to be.
Sugar dissolves in water because intermolecular connections between the slightly polar sucrose molecules and the polar water molecules release energy.
The energy required to destabilize the structure of both the pure solute and solvent is made up for by the weak bonds that develop between the solute and the solvent. The sugar molecules occupy the space between the water molecules when the sugar dissolves in the liquid. They therefore don't take up any additional space. So the solution's volume stays the same. Because hot water has more energy than cold water, sugar dissolves more quickly in hot water than it does in cold water. When water is heated, the molecules become more energetic and travel more quickly.
Learn more about molecules here-
https://brainly.com/question/26933336
#SPJ4
Because of the energy released during intermolecular interactions between the polar water molecules and the slightly polar sucrose molecules, sugar dissolves in water.
The weak bonds that form between the solute and the solvent compensate for the energy needed to disrupt the structure of both the pure solute and solvent. When sugar dissolves in a liquid, the sugar molecules take up the space between the water molecules. As a result, they don't contribute any extra room. Thus, the volume of the solution does not change. Sugar dissolves more quickly in hot water than it does in cold water because hot water has more energy. The molecules of water move more swiftly and energetically when it is heated.
To know more about water molecules please visit
https://brainly.com/question/6242314
#1234
A scientist mixes water (containing no salt) with a solution that contains 45% salt. She wants to obtain 225 ounces of a mixture that is 30% salt. How many ounces of water and how many ounces of the 45% salt solution should she use?
The ounces of water needed for 45% of the salt solution is 75 ounces.
What is solution?
The homogeneous mixture of solid, liquid or gases with a solvent is called as a solution. All the components in the solution appear as a single phase which is homogeneous.
The solution of salt and water contains 45% salt. The ounces of water for 45% of the salt solution can be calculated as,
If V is the volume of water added in ounces then 225 - V is the volume of 45% salt solution needed,
0.45 x (225 - V) = 0.3 x 225
101.25 - 0.45V = 67.5
V = 75
Therefore, 75 ounces of water should be added to the solution.
To learn more about solution click on the given link https://brainly.com/question/25326161
#SPJ1
If you bake a casserole in the oven and the casserole and dish absorb 250,000 J of heat,
q casserole = 250000 J,
what is q oven?
Answer: q= 2500
Explanation: just divide the numbers
............................................................................................................................
Answer:
............................................................................................................................
Explanation:
because ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
24) When a bulldozer moves dirt, which of the following statements best describes what's happening?
Gravitational potential energy is converted into work.
b) Electrical potential energy is converted into heat.
c) Chemical energy is converted into work.
d) Magnetic energy is converted into heat.
e) Elastic potential energy is converted into work.
When a bulldozer moves dirt elastic potential energy is converted into work. Therefore option E is correct.
What is potential energy ?Potential energy is the power that an item may store due to its position in relation to other things, internal tensions, electric charge, or other circumstances.
Rubber band potential energy, often referred to as elastic potential energy, is stored because of the rubber band's elasticity. The energy in the stretched rubber band is transformed into kinetic energy as you release it, and it transfers that energy to the surface holding the object.
One of the two types of energy is potential energy, which is the latent energy in an object at rest. Kinetic energy, on the other hand, is the energy that a moving item expresses.
Thus, option E is correct.
To learn more about potential energy follow the link below;
https://brainly.com/question/24284560
#SPJ1
Rb element oxidation numbers
Answer:
+1.
Explanation:
Use your understanding of the ideal gas law to
identify the correct relationships among the
variables.
Pressure is
Temperature is
Volume is
Moles are
The ideal gas relationships among the variables are PV = nRT
An ideal gas is a theoretical gas composed of many randomly transferring factor particles that aren't difficult to interparticle interactions. the best gasoline idea is beneficial because it obeys the precise gas law, a simplified equation of country, and is amenable to evaluation under statistical mechanics.
Volume is a degree of occupied three-dimensional space. it's far more frequently quantified numerically the usage of SI-derived gadgets or by way of diverse imperial gadgets. The definition of length is interrelated with the extent.
An ideal gas is described as one for which both the extent of molecules and forces between the molecules are so small that they have got no effect on the behavior of the gas. The real gas that acts almost like a really perfect gasoline is helium. that is due to the fact helium, in contrast to maximum gases, exists as an unmarried atom, which makes the van der Waals dispersion forces as low as viable
relation
PV = nRT
Learn more about ideal gas here:-https://brainly.com/question/20348074
#SPJ1
Question
The melting points of canola oil, corn oil, sunflower oil, and peanut oil are 10°C, -11°C, -17°C, and -2°C respectively.
You cool a mixture of these oils to 5°C.
Which oil can be separated easily?
Responses
peanut oil
sunflower oil
canola oil
corn oil
The oil that can be separated at this temperature is canola oil.
What is the melting point?The term melting point has to do with the temperature in which a solid can be converted to liquid. This is the temperature at which the various bonds that holds the molecules of the substance can be broken off.
We are told in the question that; the melting points of canola oil, corn oil, sunflower oil, and peanut oil are 10°C, -11°C, -17°C, and -2°C respectively. We want to know the oil that can be separated easily at 5°C.
Learn more about melting point:https://brainly.com/question/28902417
#SPJ1
will 150 ml of 70 degree celsius water or 150 ml 30 degree celsius water cool down faster
What are the differences between physical and chemical separation? 
The complete photoelectron spectrum for an element is shown above. Which of the following observations would provide evidence that the spectrum is consistent with the atomic model of the element?
answer choices
A neutral atom of the element contains exactly two electrons.
The element does not react with other elements to form compounds.
In its compounds, the element tends to form ions with a charge of +1.
In its compounds, the element tends to form ions with a charge of +3.
Evidence that the spectrum is consistent with the atomic model is that the neutral atom of an element contains exactly two electrons.
What is an element?It is defined as a substance which cannot be broken down further into any other substance. Each element is made up of its own type of atom. Due to this reason all elements are different from one another.
Elements can be classified as metals and non-metals. Metals are shiny and conduct electricity and are all solids at room temperature except mercury. Non-metals do not conduct electricity and are mostly gases at room temperature except carbon and sulfur.
Learn more about element,here:
https://brainly.com/question/14347616
#SPJ1
in the following chemical reaction, which element is the oxidizing agent? 3 sn(no₃)₂(aq) 2 fe(s) → 2 fe(no₃)₃(aq) 3 sn(s)
The oxidizing agent here is the [tex]Sn^{2+}[/tex]
How do we know the oxidizing agent?We know that in a chemically reaction, there is the specie that looses electrons in the reaction and there is the specie that gains electrons in the reaction. The specie that looses electrons is the reducing agent while the specie that gains electrons is the oxidizing agent.
Now we can see that the specie that gains electrons and now has a decrease in the oxidation of the specie is the tin atom thus that is the oxidizing agent.
Learn more about oxidizing agent:https://brainly.com/question/10547418
#SPJ1
how many kilometers are in 230 m
here the 230 m have how many km = 230/1000
=0.23km
Answer:
The answer is 0.23 km.
Divide the length by 1000. Example 230 m / 1000 = 0.23 km
How many moles of Cl, molecules are required to react with 4.70 mol Al atoms?
The number of moles required to react with 4.70 mol Al is 7.05 mole of Cl₂.
The mole is the quantity of substance of a system that includes as many standard entities as there are atoms in zero.012 kilograms of carbon 12; its image is the mole.
The mole, symbol mol, is the SI unit of the quantity of substance. One mole carries exactly 6.022 140 76 × 1023 essential entities. This wide variety is the fixed numerical cost of the Avogadro regular, NA, whilst expressed in mol−1, and is referred to as the Avogadro variety.
The mole, symbol mol, is the SI unit of the quantity of substance. One mole includes precisely 6.022 a hundred and forty seventy-six x 1023 fundamental entities. This variety is the constant numerical price of the Avogadro consistent, NA, while expressed inside the unit mol–1 and is called the Avogadro number.
Calculation:-
2 Al + 3Cl₂ -----> 2AlCl₃
2 mole required = 3 moles of Cl
therefore 5.70 moles of Al required = 3/2 × 4.70
= 7.05 mole of Cl₂
Learn more about moles here:-https://brainly.com/question/15356425
#SPJ1
A 43.40 mg sample of an alcohol contains 15.10 mg O, 22.6 mg C, and the rest is hydrogen. What its percent composition of carbon.
? ? C
The percentage composition of carbon in the given sample will be 52 %.
The ratio of amount of each element to the sum of all individuals components present in the given compound, multiplied by 100, it is the definition of the percentage composition of the given compound. The percent composition tells about the mass of each element in a compound. To find out the percent composition, we must first know the molar mass of the element.
Given that sample of alcohol is 43.40 mg
The alcohol contains the 15.10 mg O, and 22.6 mg C, and the rest is hydrogen.
The formula to calculate percent composition is
( 22.6 / 43.40 ) ×100 = 52 %.
Therefore, the percent composition of carbon is 52 %.
To know more about percent composition, please refer:
https://brainly.com/question/17505281
#SPJ1
identify the reaction types
1. 2H₂O₂ -> 2H₂O + O₂
2. 2CO + O₂ -> 2CO₂
3. 2KBr + Cl₂-> 2KCI + Br₂
4. 2H₂O₂ -> 2H₂O + O₂
5. 2HgO -> 2Hg + O₂
6. CaO + H₂O -> Ca(OH)₂
7. Zn + H₂SO4 -> ZnSO4 + H2
8. 2H2 + O2 -> 2H2O
9. Ca(OH)2 + H2SO4 -> CaSO4 + 2H2O
10. AgNO3 + NaCl -> AgCl + NaNO3
The reaction types are oxidation-reduction, displacement, and double displacement reaction.
1. 2H₂O₂ -> 2H₂O + O₂ ----------- reduction.
2. 2CO + O₂ -> 2CO₂ ------------ Synthesis
3. 2KBr + Cl₂-> 2KCI + Br₂ ----- Single Replacement
4. 2H₂O₂ -> 2H₂O + O₂ ---------------- reduction.
5. 2HgO -> 2Hg + O₂ ----------- Decomposition.
6. CaO + H₂O -> Ca(OH)₂ ---------- synthesis / hydration
7. Zn + H₂SO4 -> ZnSO4 + H2 ----- single displacement
8. 2H2 + O2 -> 2H2O ---------- Synthesis.
9. Ca(OH)2 + H2SO4 -> CaSO4 + 2H2O --- double displacement.
10. AgNO3 + NaCl -> AgCl + NaNO3 --- double displacement.
Learn more about types of chemical reactions here:-https://brainly.com/question/11231920
#SPJ1
Macmillan Learning A balloon filled with helium has a volume of 20.5 L at 281 K. What volume will the balloon occupy at 249 K? 11
The volume the balloon will occupy at 249 K, given it occupied 20.5 L at 281 K is 18.2 L
How do I determine the volume the balloon will occupy?We know that volume temperature relationship is given by the following formula:
V₁ / T₁ = V₂ / T₂
Where
V₁ and V₂ are the initial and new volumeT₁ and T₂ are the initial and new temperatureWith the above formula, we can obtain the volume of the balloon at 249 K as follow:
Initial volume (V₁) = 20.5 LInitial temperature (T₁) = 281 KNew temperature (T₂) = 249 KNew volume (V₂) =?V₁ / T₁ = V₂ / T₂
20.5 / 281 = V₂ / 249
Cross multiply
281 × V₂ = 20.5 × 249
281 × V₂ = 5104.5
Divide both side by 281
V₂ = 5104.5 / 281
V₂ = 18.2 L
Thus, we can conclude that the volume at 249 K is 18.2 L
Learn more about gas laws:
https://brainly.com/question/14560487
#SPJ1
How can we determine the rate of the decomposition of H2O2?
Answer:
Because the concentration of oxygen is proportional to its pressure, we can calculate the rate at which H2O2 decomposes by monitoring the rate of increase of the pressure due to the formation of oxygen. By varying the initial molar concentration of H2O2 solution, the rate law for the reaction can be determined.
Explanation:
The reaction rate depends on the disappearance of the hydrogen peroxide or on the appearance of oxygen
What is the rate of decomposition?We know that the rate of decomposition has to the rate at which the compound hydrogen peroxide can be broken down so as to obtain water and oxygen.
In this case, we can see that there are two ways that we can be able to monitor the rate of the reaction and these two ways are;
1) To observe the rate at which the hydrogen peroxide disappears
2) To observe the rate at which the oxygen gas appears.
Learn more about rate of reaction:https://brainly.com/question/8592296
#SPJ4
Which scientist first proposed that the electron in the hydrogen atom can have only certain energies?.
Theoretical hydrogen atom models that Niels Bohr proposed helped to better understand the hydrogen atom's emission spectrum.
Describe the Bohr model.The tiny, positively charged nucleus in Bohr's theory is surrounded by orbiting, negatively charged electrons. An electron has more energy when it is further away from the nucleus than when it is nearer, according to Bohr.
What does Bohr's model have to say about the hydrogen spectrum?In order to explain the line spectra of the electron, Niels Bohr made the assumption that the electron traveled in circular orbits and that only orbits with specific radii were permitted in the hydrogen atom.
Why did Bohr employ hydrogen atoms?For instance, an atom of hydrogen has a lot of stable circular orbitals.
To know more about Bohr model of hydrogen, visit-https://brainly.com/question/29236189
#SPJ4
A sample of an ideal gas at 1.00 atm and a volume of 1.98 L was placed in a weighted balloon and dropped into the ocean. As the sample descended, the water pressure compressed the balloon and reduced its volume. When the pressure had increased to 60.0 atm, what was the volume of the sample? Assume that the temperature was held constant.
The volume of the sample, assuming the temperature was held constant is 0.033 L
How do I determine the volume of the sample?From the question given above, the following data were obtained:
Initial pressure (P₁) = 1 atmInitial volume (V₁) = 1.98 LTemperature = ConstantNew pressure (P₂) = 60.0 atmNew volume (V₂) =?Since the temperature is constant, the new volume of the sample can be obtained by using the Boyle's law equation as illustrated below:
P₁V₁ = P₂V₂
1 × 1.98 = 60 × V₂
1.98 = 60 × V₂
Divide both side by 60
V₂ = 1.98 / 60
V₂ = 0.033 L
Thus, we can conclude that the new volume of the sample is 0.033 L
Learn more about gas laws:
https://brainly.com/question/14560487
#SPJ1
