1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Sidana [21]
3 years ago
12

Calculate the molarity of a 17.5% (by mass) aqueous solution of nitric acid. Select one: a. 2.74 m b. 4.33 m c. 0.274 m d. 3.04

m e. The density of the solution is needed to solve the problem.
Chemistry
1 answer:
den301095 [7]3 years ago
4 0

Answer:

Option e.

Explanation:

Molarity is the concentration that indicates moles of solute in 1 L of solution.

We have another concentration, percent by mass.

Percent by mass indicates mass of solute in 100 g of solution.

Our solute is HNO₃, our solvent is water.

17.5 g of nitric acid is the mass of solute. We can convert them to moles:

17.5 g . 1mol / 63g = 0.278 moles

We do not have volume of solution. We assume the mass is 100 g because the percent by mass but we need density to state the volume.

Density = Mass / Volume

Mass / Density = Volume

Once we have the volume, we need to be sure the units is in L, to determine molarity

M = mol /L

You might be interested in
Which product of nuclear decay has mass but no charge?
polet [3.4K]
Alpha particles have a charge of +2 and a mass of 4
Gamma rays have a charge of 0 and a mass of 0
Neutrons have a charge of 0 and a mass of 1
Beta positrons have a charge of +1 and a mass of 0
4 0
3 years ago
In the reaction Na2CO3 + 2HCl → 2NaCl + CO2 + H2O, how many grams of CO2 are produced when 7.5 moles of HCl is fully reacted?
Sidana [21]

Answer:

165 of CO₂.

Explanation:

In the reaction:

Na2CO3 + 2HCl → 2NaCl + CO2 + H2O

2 moles of HCl reacts producing 1 mole o CO₂

If 7.5 moles of HCl reacts, moles of CO₂ produced are:

7.5 moles of HCl ₓ ( 1 mol CO₂ / 2 mol HCl) = 3.75 mol CO₂. As molar mass of CO₂ is 44g/mol, mass of CO₂ is:

3.75 mol CO₂ ₓ (44g / 1mol) = <em>165 of CO₂ </em>

8 0
3 years ago
Read 2 more answers
Energy transformations are constantly taking place. <br><br><br> True or False
DaniilM [7]

The statement is : True 
 
-Hope thi helps.
3 0
3 years ago
Read 2 more answers
What is the source of energy that provides the boost for electrons during photosynthesis
Elodia [21]

Answer:

The sun

Explanation:

The sun is the source of energy that provides the boost for electrons during photosynthesis

3 0
3 years ago
What mass of oxygen is needed to burn 4g of hydrogen, given the equation below
aleksandrvk [35]

32g of oxygen is required to burn 4g of hydrogen.

Define molecular mass.

A specific molecule's mass is expressed in daltons and is known as the molecular mass (m) (Da or u). Due to the varying isotopes of an element that they contain, multiple molecules of the same substance can have distinct molecular weights.

The total atomic mass of every atom in a molecule, calculated using a scale with hydrogen, carbon, nitrogen, and oxygen having atomic masses of 1, 12, 14, and 16, respectively. For instance, water has a molecular mass of 18 (2 + 16), which consists of two hydrogen atoms and one oxygen atom. known also as molecular weight.

In ,2H2+O2-----> 2H2O

H 2 molecules have a mass of 2 g/mol.

The molecular weight of oxygen is 32 g/mol.

When the chemical equation is balanced,

To totally react, 32 g of oxygen are needed for every 22=4 g of hydrogen.

To know more about molecular mass use link below:

brainly.com/question/21334167

#SPJ1

7 0
1 year ago
Other questions:
  • What is a chemical energy
    6·1 answer
  • In a titration how much 0.50 M HCl is needed to neutralize 1 liter of a 0.75 M solution of NaOH?
    11·1 answer
  • What are some signs that a chemical change takes place when a firework explodes? Matter is destroyed Light is produced Heat is p
    14·1 answer
  • Name three types of energy associated with the microwave
    14·1 answer
  • Arrange the following elements in order of decreasing atomic radius: Ba, Sn, S, Pb, and As. Rank elements from largest to smalle
    14·1 answer
  • How many moles of oxygen gas would be needed to completely burn 8 moles of<br> hydrogen sulfide?
    8·1 answer
  • Calculate the ratio of moles of H2O to moles of anhydrous CuSO4 in CuSO4.
    11·1 answer
  • Using the above scenario, which of these would have the largest amount of available energy?
    5·1 answer
  • How much heat must be removed from 357 g of water at 76.9C in order to cool it down to 18.1C?
    9·1 answer
  • 0.30 kg cart moves on an air track at 1.2 m/s.It collides with and sticks to another cart of mass 500 g,which was stationary bef
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!