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
dlinn [17]
3 years ago
14

100 mL of a 0.300 M solution of AgNO3 reacts with 100 mL of a 0.300 M solution of HCl in a coffee-cup calorimeter and the temper

ature rises from 21.80 °C to 23.20 °C. Assuming the density and specific heat of the resulting solution is 1.00 g/mL and 4.18 J/g ∙ °C, respectfully, what is the ΔH°rxn?
Chemistry
1 answer:
tatyana61 [14]3 years ago
7 0

Answer:

ΔH°rxn = 39013.33 J/mol = 39.013 kJ/mol.

Explanation:

  • We can calculate the amount of heat (Q) released from the solution using the relation:

<em>Q = m.c.ΔT,</em>

Where, Q is the amount of heat released from the solution (Q = ??? J).

m is the mass of the solution (m of the solution = density of the solution x volume of the solution = (1.0 g/mL)(200 mL) = 200 g.

c is the specific heat capacity of the solution (c = 4.18 J/g∙°C).

ΔT is the difference in the T (ΔT = final temperature - initial temperature = 23.20 °C - 21.80 °C = 1.4 °C).

∴ Q = m.c.ΔT = (200 g)(4.18 J/g∙°C)(1.4 °C) = 1170.4 J.

∵ ΔH°rxn = Qrxn/(no. of moles of AgNO₃).

Molarity (M) is defined as the no. of moles of solute dissolved in a 1.0 L of the solution.

M = (no. of moles of AgNO₃)/(Volume of the solution (L)).

∴ no. of moles of AgNO₃ = (M)(Volume of the solution (L)) = (0.3 M)(0.1 L) = 0.03 mol.

∴ ΔH°rxn = Qrxn/(no. of moles of AgNO₃) = (1170.4 J)/(0.03 mol) = 39013.33 J/mol = 39.013 kJ/mol.

You might be interested in
Which is greater, the moons period of rotation or its period of revolution?
balu736 [363]
C. they are equal

This is because it takes about the same amount of time for the moon to rotate around its axis that it does to rotate around the Earth.
3 0
3 years ago
Read 2 more answers
Before the work of Albert Einstein and other prominent scientists of the early 1900's, the predominant view among
Ivanshal [37]
A wave.

Scientists now recognize that light can behave as both a particle and a wave.
3 0
3 years ago
Calculate the mass of a 0.297-mL sample of a liquid with a density of 0.930 g/mL.
tekilochka [14]

Answer: 0.27621 g

Explanation:

0.297 ml *0.930 g/ml=0.27621 g

8 0
2 years ago
Can someone help me on some of these question please : )
frez [133]
X-Ray used to Take images of teeth and bones.
Ultraviolet night vision goggle
4 0
3 years ago
using the same balanced equation, what is the number of moles of carbon dioxide produced from 3.750 moles of propane?
kondor19780726 [428]

Answer:

11.25moles of CO2

Explanation:

First, let us generate a balanced equation for the reaction of propane to produce CO2. This reaction called Combustion. It is a reaction in which propane burns in air (O2) to produce CO2 and H20. The equation is given below:

C3H8 + 5O2 —> 3CO2 + 4H2O

From the equation,

1mole of C3H8 produced 3moles of CO2.

Therefore, 3.750 moles of C3H8 will produce = 3.750 x 3 = 11.25moles of CO2

5 0
3 years ago
Other questions:
  • Which of these would a very short plant most likely use to move water and nutrients through the plant?
    15·2 answers
  • Im named after the person who created the 1st periodic table. Who am i ?
    11·1 answer
  • Review Problem 5.040 For each reaction, identify in order the substance oxidized, the substance reduced, the oxidizing agent, an
    7·1 answer
  • What volume of concentrated hydrochloric acid (12.0 M HCl) is required to make 2.0 liters of a 3.0 M HCl solution?
    5·2 answers
  • PLEASE HELP!! What is the percentage by mass of solution formed by dissolving 27.0 grams of HCl in 102.0 grams of water? 26.5% 2
    13·1 answer
  • . Deltas form mainly due to
    7·2 answers
  • Cyclopropane, a substance used with oxygen as a general anesthetic, contains only two elements, carbon and hydrogen. When 1.00 g
    12·1 answer
  • At what pressure would a 5.32 mol Cl2 sample occupy 5.08 L at 181.59 K? please help!!
    8·1 answer
  • What is Metallic bond
    13·2 answers
  • How does burning fossil fuels cause an increase of carbon in the air?
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!