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
timama [110]
3 years ago
9

If the δh°soln of hno3 is –33.3 kj/mol, then how much heat is evolved by dissolving 0.150 mol hno3 in 100.0 ml of water?

Chemistry
1 answer:
Leto [7]3 years ago
4 0
Answer: - 5.00 kJ

Explanation:

1) The heat evolved during the reation is proportional to the number of moles dissolved.

2) Proportionality = ratio is constant

<span>3) δh°soln of HNO3 is –33.3 kJ/mol => ratio 1

                  -33.3 kJ
ratio 1 = ---------------------
                 1 mol HNO3

4) ratio 2

        x
--------------
0.150 mol     
</span>
5) proportion

ratio 1 = ratio 2

        x                -33.3 kJ
--------------- =    -------------- => x = 0.150 mol * (-33.3kJ) / 1 mol = - 4.995 kJ ≈
0.150 mol              1 mol

≈ - 5.00 kJ
You might be interested in
The number of nucleons in an atom is the atom's (atomic, mass) number.
ELEN [110]
The number of neutrons in an atom is the number of particles present in its nucleus.
The atomic number is the number of protons whereas the mass number is the number of protons and number of neutrons together
This implies that the number of neutrons is the atom's mass number
3 0
3 years ago
Read 2 more answers
A student was asked to determine the densities of the four metals listed. The student was asked to determine the density of an u
Iteru [2.4K]

Answer:

D is correct

Explanation:

because

we know that

density of lead is 11.36 g/cm3

and

density of tin is 7.31 g/cm3

so..

density of alloy by mixing 50/50

=(11.36+7.31)/2 g/cm3

=18.67/2 g/cm3

=9.33 g/cm3

5 0
3 years ago
A container with 3.0 moles of gas has a volume of 60.0L with a temperature at 400.K what is the pressure
iris [78.8K]

Answer: P= 1.64 atm

Explanation: solution attached.

Use Ideal gas law

PV= nRT

Derive for P

P= nRT/V R= 0.08205 L.atm/mol.K

Substitute the values.

3 0
3 years ago
What does atomic mass on the periodic table represent?
neonofarm [45]
The atomic mass on the periodic table represents the sum of number of protons and number of neutrons.

Atomic mass = Number of protons + number of neutrons

Hope this helps!
6 0
3 years ago
A particle that makes up the basic unit of an element is called an __________.
AleksAgata [21]
I think it’s atoms because of google

3 0
3 years ago
Other questions:
  • Is Fe + S a mixture, compound, or element?
    5·1 answer
  • Express a length of 13.63 m in centimeters.<br> Answer in units of cm.
    12·1 answer
  • What is the process of gas changes to a solid
    15·2 answers
  • What is the best description of the role of decomposers in the carbon cycle?
    6·2 answers
  • If two substances travel up the chromatography paper this implies that
    12·1 answer
  • A science fair volcano bubbles and fizzes. what is taking place?
    7·1 answer
  • Which climate is most likely found in a high pressure belt giving brainliest ty
    15·2 answers
  • The fastest train in the world can travel 1,500 kilometers in 3 hours. What is its speed?
    12·1 answer
  • Guys help please!! any five effects of heat!!​
    7·1 answer
  • When aqueous solutions of magnesium nitrate and sodium carbonate are mixed together what will happen
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!