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
wlad13 [49]
3 years ago
13

HClO4 acid solution has a concentration of 5 Molarity. Calculate the concentration of this solution in

Chemistry
1 answer:
Nutka1998 [239]3 years ago
6 0

Answer:

1. Percentage by weight = 0.5023 = 50.23 %

2. molar fraction =0.153

Explanation:

We know that

Molar mass of HClO4 = 100.46 g/mol

So the mass of 5 Moles= 5 x 100.46

       Mass (m)= 5 x 100.46 = 502.3 g

Lets assume that aqueous solution of HClO4  and the density of solution is equal to density of water.

Given that concentration HClO4 is 5 M it means that it have 5 moles of HClO4 in 1000 ml.

We know that

Mass = density x volume

Mass of 1000 ml  solution = 1 x 1000 =1000     ( density = 1 gm/ml)

            m'=1000 g

1.

Percentage by weight = 502.3 /1000

Percentage by weight = 0.5023 = 50.23 %

2.

We know that

molar mass of water = 18 g/mol

mass of water in 1000 ml = 1000 - 502.3 g=497.9 g

So moles of water = 497.7 /18 mole

moles of water = 27.65 moles

So molar fraction = 5/(5+27.65)

molar fraction =0.153

You might be interested in
a gas sample occupies a volume of 140 mL at a temperature of 296 K and a pressure of 98.2kPa. how many moles of gas are there? s
Tamiku [17]

Answer:

0.00559 mol

Explanation:

The following data were obtained from the question:

V = 140mL = 0.14L

T = 296K

P = 98.2kPa = 98200Pa

Recall: 101325Pa = 1atm

98200Pa = 98200/101325 = 0.97atm

R = 0.082atm.L/Kmol

n =?

The number of mole (n) can be obtained as follows:

PV = nRT

n = PV /RT

n = (0.97x0.14)/(0.082x296)

n = 0.00559 mol

Therefore, the number of mole of the gas present is 0.00559 mol

4 0
3 years ago
Which state of matter consists of particles that can be partially compressed? Gas Liquid Plasma Solid
son4ous [18]

Answer: Option (b) is the correct answer.

Explanation:

In liquid state, particles do have kinetic energy that helps in partially overcoming the intermolecular forces between the molecules. But still the particles are close together and they are able to slide past each other.

So, when we apply pressure on a liquid then its molecules partially gets compressed.

On the other hand, molecules of a solid are held together by strong intermolecular forces of attraction. Hence, they have definite shape and volume. As a result, solids do not get compressed.

In gases and plasma state of matter, molecules are gar away from each other. So, they are able to get completely compressed when a pressure is applied.

Thus, we can conclude that liquid is the state of matter which consists of particles that can be partially compressed.

8 0
3 years ago
Which event is most likely an example of a chemical reaction
Inessa [10]

Explanation:

One example of a chemical reaction is the rusting of a steel garbage can. That rusting happens because the iron (Fe) in the metal combines with oxygen (O2) in the atmosphere. Chemical bonds are created and destroyed to finally make iron oxide (Fe2O3).

7 0
3 years ago
Which of the following diagrams represents a single<br> replacement reaction?
kari74 [83]

Answer:

It's a, trust me I'm very good with chemistry

3 0
2 years ago
What makes gas turn into a liquid?
lesantik [10]
I would say compression or the absence of heat because heating a liquid makes it a gas<span />
3 0
3 years ago
Other questions:
  • How does polarity of the solute and solvent affect the solubility of the solute ?
    11·1 answer
  • What are the metric units of volume, mass and density?
    10·1 answer
  • According to the arrhenius theory an acid is a substance that
    6·2 answers
  • According to one theory, the pressure of a gas increases as its volume decreases, because the molecules in the gas have to move
    9·1 answer
  • This HAS to be an answer for second graders<br><br><br>Where do different kinds of apples come from?
    6·2 answers
  • Help please thank you!!
    6·1 answer
  • How much energy is required to bring a 30 gram crayon from room temperature, 25 degrees C, to its melting point 49 degrees C?
    10·1 answer
  • Which of the following equations correctly describes how to calculate net income? a. net income = (cost of goods sold) - (net sa
    5·1 answer
  • Consider the reaction: NaNO3(s) + H2SO4(l) NaHSO4(s) + HNO3(g) ΔH° = 21.2 kJ
    10·1 answer
  • Buffalo, New York is a city located near a large lake called Lake Erie. Buffalo receives an average of nearly 94 inches of snowf
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!