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
ElenaW [278]
3 years ago
8

A 20.0 % by mass solution of phosphoric acid (H 3PO 4) in water has a density of 1.114 g/mL at 20°C. What is the molarity of thi

s solution?
Chemistry
1 answer:
Vinvika [58]3 years ago
6 0

Answer:

2.28 M

Explanation:

Step 1: Given data

Percent by mass (%m/m): 20.0 %

Density (ρ): 1.114 g/mL

Step 2: Calculate the percent by volume (%m/v)

We will use the following expression.

\% m/v = \% m/m \times \rho = 20.0 \%  \times 1.114g/mL = 22.3 g \% mL

Step 3: Calculate the moles of solute in 100 mL of solution

The molar mass of phosphoric acid is 97.99 g/mol. The moles corresponding to 22.3 g are:

22.3g \times \frac{1mol}{97.99g} = 0.228mol

Step 4: Calculate the molarity of the solution

0.228 moles of solute are in 100 mL (0.100 L) of solution. The molarity of the solution is:

M = \frac{0.228mol}{0.100L} =2.28 M

You might be interested in
2.0g divided by 34.0 g times 100% equals what?
Lubov Fominskaja [6]

Answer: \frac{1}{17}

Explanation: \frac{2}{34}\cdot \:100\%\:=\frac{1}{17}

I tried my best, I hope this helps!

7 0
3 years ago
How many moles of magnesium is 1.25 x 1023 atoms of magnesium?
andrew-mc [135]
The moles of magnesium in 1.25 x 1023 are 20.8 mol.
4 0
4 years ago
All matter has __. A.) COLOR B.) MASS C.) VOLUME D.) WEIGHT
Firlakuza [10]
I'm pretty sure it's B) Mass
3 0
3 years ago
QUESTION 8
grin007 [14]

answer to Question will be 2 electron as it forms 2H+

5 0
3 years ago
Read 2 more answers
Murcury is the only metal at room temperature. Its density is 13.6g/mL. How many grams of murcury will occupy a volume of 95.8mL
Hatshy [7]

Answer:

<h3>The answer is 1.30288 × 10³ g</h3>

Explanation:

The mass of a substance when given the density and volume can be found by using the formula

<h3>mass = Density × volume</h3>

From the question

volume = 95.8mL

density = 13.6g/mL

We have

mass = 13.6 × 95.8 = 1302.88

We have the final answer as

<h3>1.30288 × 10³ g</h3>

Hope this helps you

3 0
3 years ago
Other questions:
  • Are you required toi sign up for medicare
    11·2 answers
  • Give the name of the following molecule. EXTRA POINTS PLEASE HELP
    14·1 answer
  • What is unique about the bonding between carbon and other elements?
    7·1 answer
  • How many different isomers can be derived from ethylene if two hydrogen atoms are replaced by a fl uorine atom and a chlorine at
    12·1 answer
  • A current carrying wire wrapped around an iron ore is called a(n)
    5·1 answer
  • To calculate changes in concentration for a system not at equilibrium, the first step is to determine the direction the reaction
    11·1 answer
  • Calculate molar concentration of formic acid solution if degree of dissociation is 4% K(HCOOH)=2.10^_4
    6·1 answer
  • Is oxygen a beginning substance or ending substance?
    6·2 answers
  • The graph shows the distance an object travel in 11 seconds which answer choice best describes the movement of the object betwee
    15·1 answer
  • Which of the following can’t replace hydrogen of acid in the chemical reaction​
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!