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
40. What is the mass of 3 moles of H 2 O
Leya [2.2K]

Answer:

54g

Explanation:

Given parameters:

Number of moles of H₂O  = 3 moles

Unknown:

mass of water  = ?

Solution:

To solve this problem, we use the expression below:

         mass  = number of moles x molar mass

Molar mass of H₂O  = 2(1)  + 16  = 18g/mol

Mass of water  = 3 x 18  = 54g

3 0
2 years ago
Find the density of metal with a volume 4.0 cm and a mass of 8.0 grams.
olga_2 [115]
D=m/v

so,

d=8.0g/4.0cm

d=2

3 0
2 years ago
2. List and elaborate on at least two limitations of the 24-hour recall as a
Pavlova-9 [17]

Answer:

The correct answer is - may not be typical, and participant burden.

Explanation:

The 24-hour recall is nothing but a retrospective method of diet assessment. In this method, an individual is interviewed about his or her diet consumption during the last 24 hours.

The disadvantages or limitations of this method include the inability of a single day's intake to describe the typical diet, multiple recalls to intake, cost and administration time; participant burden, have to recall to reliably estimate usual intake.

5 0
3 years ago
A sample of sulfur hexafluoride gas occupies a volume of 9.10 L at 198ÁC. Assuming that the pressure remains constant, what temp
alexandr1967 [171]
  As we know that
<span>V1/T1 = V2/T2 
V1 = 9.10 L 
T1 = 471 K 
V2 = 2.50 L 
T2 = 2.5 x 471 / 9.10 = 129.3 K 
T2 = 129.3 - 273 =
 -143.6 deg Celsiu
hope it helps</span>
5 0
3 years ago
Read 2 more answers
How many grams are in 9.05 x 1023 atoms of silicon
UkoKoshka [18]

Answer:

42.2075 grams

Explanation:

4 0
2 years ago
Other questions:
  • Balance the equations below by adding coefficients. Enter a number in each blank, entering "1" when necessary.
    10·2 answers
  • What is the little “bump” of energy that is shown at the beginning of the reaction...the energy required to start the reaction
    10·1 answer
  • Which lab equipment tool would you use to measure exactly 4 ml of water​
    15·1 answer
  • hellllpppppp pleaseeeeee i will give brainliest and don't forget to show proof, don't say "i already learned this" or "just trus
    13·1 answer
  • Write a word equation for the combustion of propane???<br> HELP????
    7·1 answer
  • Which of the following is true of ionic bonds?
    9·1 answer
  • 7th grade science help me pleaseee
    6·1 answer
  • What is the mass of 1.24 x 10^23 molecules of N2O2
    10·1 answer
  • What is defined as the plants and animals and the physical surroundings, including the sun, air, soil, and water?
    9·1 answer
  • To insert a thermometer into an adapter, use choose. To prepare the thermometer. Then, hold the thermometer choose. The adapter
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!