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
Nadusha1986 [10]
3 years ago
14

What is the change in internal energy ( ΔU ) of the system if q = –8 kJ and w = –1 kJ for a certain process?

Chemistry
1 answer:
Radda [10]3 years ago
6 0

Answer:

Change in internal energy (ΔU) = -9 KJ

Explanation:

Given:

q = –8 kJ [Heat removed]

w = –1 kJ [Work done]

Find:

Change in internal energy (ΔU)

Computation:

Change in internal energy (ΔU) = q + w

Change in internal energy (ΔU) = -8 KJ + (-1 KJ)

Change in internal energy (ΔU) = -8 KJ - 1 KJ

Change in internal energy (ΔU) = -9 KJ

You might be interested in
Explain what lattice energy is and how it affects the properties of ionic compounds. Describe the general properties of ionic co
irga5000 [103]
An ionic compound is the attraction between a metal and a nonmetal!!
8 0
3 years ago
Read 2 more answers
Water can exist in three states of matter. Imagine examining the changes of state from solid to liquid to gas by adding to ice.
loris [4]

<u>Answer:</u>

<em>We know water can exist in all three states be it solid or liquid or gas the only difference between the three states is the temperature at which they exist. </em>

<u>Explanation:</u>

When the temperature moves towards colder region the state of water changes to solid while when the temperature moves to water region the state of water changes to gas.

This little experiment can be done with the help of ice at room temperature. The more ice is applied to water it will turn to ice but removal of eyes in room temperature. And will make it turn to water and complete removal of eyes with application of heat would make it into vapour.

8 0
3 years ago
Read 2 more answers
For the reaction Fe3O4(s) + 4H2(g) --&gt; 3Fe(s) + 4H2O(g)
mojhsa [17]

Answer : The value of equilibrium constant for this reaction at 328.0 K is 1.70\times 10^{15}

Explanation :

As we know that,

\Delta G^o=\Delta H^o-T\Delta S^o

where,

\Delta G^o = standard Gibbs free energy  = ?

\Delta H^o = standard enthalpy = 151.2 kJ = 151200 J

\Delta S^o = standard entropy = 169.4 J/K

T = temperature of reaction = 328.0 K

Now put all the given values in the above formula, we get:

\Delta G^o=(151200J)-(328.0K\times 169.4J/K)

\Delta G^o=95636.8J=95.6kJ

The relation between the equilibrium constant and standard Gibbs free energy is:

\Delta G^o=-RT\times \ln k

where,

\Delta G^o = standard Gibbs free energy  = 95636.8 J

R = gas constant  = 8.314 J/K.mol

T = temperature  = 328.0 K

K = equilibrium constant = ?

Now put all the given values in the above formula, we get:

95636.8J=-(8.314J/K.mol)\times (328.0K)\times \ln k

k=1.70\times 10^{15}

Therefore, the value of equilibrium constant for this reaction at 328.0 K is 1.70\times 10^{15}

3 0
3 years ago
How many moles of ammonium sulfate can be from the reaction of 30.0 mol of NH3 with H2SO4 according to the following equation: 2
marysya [2.9K]

Answer:

15 moles of  ammonium sulfate would be formed from 30 moles of ammonia.

Explanation:

Given data:

Number of moles of ammonium sulfate formed = ?

Number of moles of ammonia = 30.0 mol

Solution:

Chemical equation:

2NH₃  +   H₂SO₄  →  (NH₄)₂SO₄

Now we will compare the moles of ammonium sulfate with ammonia.

                           NH₃           :           (NH₄)₂SO₄

                             2              :               1

                            30.0          :              1/2×30.0 = 15.0 mol

So 15 moles of  ammonium sulfate would be formed from 30 moles of ammonia.

7 0
3 years ago
A reddish-orange element used for electrical wiring
dsp73
Copper is the answer to ur question
4 0
3 years ago
Other questions:
  • Sort these elements into pairs that would most likely exhibit similar chemical properties Br ,Mg ,F ,Sr ,S ,O
    12·1 answer
  • The partial pressure of a gas is a inversely proportional to the temperature of the gas. b. directly proportional to the volume
    7·1 answer
  • Draw the lewis structure for c2h2 (whose skeletal structure is hcch). draw the molecule by placing atoms on the grid and connect
    13·1 answer
  • Hydrogen chloride gas can be prepared by the following reaction: 2NaCl(s) + H2SO4(aq) → 2HCl(g) + Na2SO4(s) How many grams of HC
    10·1 answer
  • Help with science periodic table giving brainly and thanks
    10·2 answers
  • If you walk out into the ocean, you will see that the land covered by ocean water slopes very slowly away from the coastline. Th
    11·2 answers
  • A point has no demension.​
    8·1 answer
  • If 52.5 mL of lead(II) nitrate solution reacts completely with excess sodium iodide solution to yield 0.248 g of precipitate, wh
    5·1 answer
  • 6.The atomic mass represents the weighted average of an element’s
    12·2 answers
  • Sugar dissolves in water. Which statement best describes what is happening? (1 point)
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!