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
Brilliant_brown [7]
3 years ago
13

Aqueous concentrated nitric acid is 69% hno3 by weight and has a density of 1.42 g/ml.

Chemistry
1 answer:
OleMash [197]3 years ago
3 0

Answer: -

15.55 M

35.325 molal

Explanation: -

Let the volume of the solution be 1000 mL.

Density of nitric acid = 1.42 g/ mL

Total Mass of nitric acid Solution = Volume of nitric acid x Density of nitric acid

= 1000 mL x 1.42 g/ mL

= 1420 g.

Percentage of HNO₃ = 69%

Amount of HNO₃ = \frac{69} {100} x 1420 g

= 979.8 g

Molar mass of HNO₃ = 1 x 1 + 14 x 1 + 16 x 3 = 63 g /mol

Number of moles of HNO₃ = \frac{979.8 g}{63 g/ mol}

= 15.55 mol

Molarity is defined as number of moles per 1000 mL

We had taken 1000 mL as volume and found it to contain 15.55 moles.

Molarity of HNO₃ = 15.55 M

Mass of water = Total mass of nitric acid solution - mass of nitric acid

= 1420 - 979.8

= 440.2 g

So we see that 440.2 g of water contains 15.55 moles of HNO₃

Molality is defined as number of moles of HNO₃ present per 1000 g of water.

Molality of HNO₃ = \frac{15.55 x 1000}{440.2}

= 35.325 molal

You might be interested in
If a chemical reaction such as photosynthesis begins with six atoms of carbon, how many atoms of carbon should be in the product
ryzh [129]

6 atoms of carbon C is the correct answer

7 0
3 years ago
Read 2 more answers
A flexible container at an initial volume of 6.13 L contains 6.51 mol of gas. More gas is then added to the container until it r
aivan3 [116]

Answer:

the final mole of the flexible container = 12.92 moles

Explanation:

Given that :

initial volume of a flexible container = 6.13 L

initial mole of a flexible container = 6.51 mol

final volume of a flexible container = 18.3 L

final mole of a flexible container = ???

Assuming the pressure and temperature of the gas remain constant, calculate the number of moles of gas added to the container.

Therefore,

n= \dfrac{V_2*n_1}{V_1}

n= \dfrac{18.3*6.51}{6.13}

n = 19.43

n=n_1+n_2

19.43 = 6.51 + n₂

n₂ = 19.43 - 6.51

n₂ = 12.92 moles

Thus; the final mole of the flexible container = 12.92 moles

6 0
3 years ago
If a candle is burning in an open room, which reactant is in excess?
LenKa [72]

Answer:

a

Explanation:

3 0
3 years ago
I need help with this question plz ASAP
Orlov [11]

Answer:

D

Explanation:

i farted

7 0
2 years ago
The reaction below has an equilibrium constant kp=2.2×106 at 298 k. 2cof2(g)⇌co2(g)+cf4(g) calculate kp for the reaction below.
AnnZ [28]

<span>I believe the correct 2nd reaction is:</span>

cof2(g)⇌1/2 co2(g)+1/2 cf4(g)

where we can see that it is exactly one-half of the original

Therefore the new Kp is:

new Kp = (old Kp)^(1/2)

new Kp = (2.2 x 10^6)^(1/2)

<span>new Kp = 1,483.24 </span>

8 0
4 years ago
Read 2 more answers
Other questions:
  • How can you increase the boiling point of water?
    8·1 answer
  • How does the freezing point of a given type of matter compare to the melting point of that same type of matter?                
    5·1 answer
  • What element has a mass number of 16 and 8 neutrons
    10·2 answers
  • Ethanol is a common laboratory solvent and has a density of 0.789 g/ml. What is the mass, in grams, of 125 ml of ethanol?
    15·1 answer
  • What is the mole ratio that can convert from moles of A to moles of B?
    12·1 answer
  • after learning about several of the body systems, John tells the class that the digestive system and respiratory system have one
    13·1 answer
  • Pls help plsssssssss
    8·2 answers
  • What are some things that can have an effect on the amount of water in the atmosphere? Describe how these examples can impact an
    10·1 answer
  • What happens to water when it freezes?
    6·2 answers
  • Explain any differences in the pulse rate at rest and after exercise ( in own words btw^^
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!