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
AleksAgata [21]
4 years ago
11

Consider the following cyclic process carried out in two steps on a gas. Step 1: 50. J of heat is added to the gas, and 13 J of

expansion work is performed. Step 2: 56 J of heat is removed from the gas as the gas is compressed back to the initial state. Calculate the work for the gas compression in Step 2.
Chemistry
1 answer:
Gennadij [26K]4 years ago
3 0

Answer:

Work for the gas compression is 93 J.

Explanation:

The change in internal internal energy during the whole cycle will be 0 as internal energy is a state function.

According to first law of thermodynamics, \Delta U=q+w

where, \Delta U represents change in internal energy, q is the heat exchanged and w is work done.

Here, (\Delta U)_{step1}=50J-13J=37J  ( q is positive for addition of heat and w is negative for work don by system)

(\Delta U)_{step2}=-56J+w   (q is negative for removal of heat)

\Delta U=(\Delta U)_{step2}-(\Delta U)_{step1}=-56J+w-37J=0

or, w = 93 J

You might be interested in
Part iv. Is the neutralization reaction enthalpy favored?
Burka [1]

Yes, it is a special case of enthalpy of neutralization.  

The enthalpy of neutralization (ΔHn) is the change in enthalpy that occurs when one equivalent of an acid and one equivalent of a base undergo a neutralization reaction to form water and a salt.

The standard enthalpy change of neutralization is the enthalpy change when solutions of an acid and an alkali react together under standard conditions to produce 1 mole of water.

5 0
3 years ago
What is the pH for a 0.10 M HCI solution at 25<br> degreesCelsius?
11Alexandr11 [23.1K]

Answer:

1.0

Explanation:

Hydrochloric acid is a strong acid, that is, an acid that dissociates completely, according to the following reaction.

HCl(aq) → H⁺(aq) + Cl⁻(aq)

Then, the concentration of H⁺ will be equal to the initial concentration of the acid, i.e., 0.10 M.

We can calculate the pH using the following expression.

pH = -log [H⁺] = -log 0.10 = 1.0

3 0
4 years ago
how much water should be added to 1 gallon of pure antifreeze to obtain a solution that is 60% antifreeze?
antoniya [11.8K]
1 gallon of antifreeze = 60% of mixture. Total mixture:
Vm = 1/0.6
= 1.67 gallons

Volume of water = total vol - antifreeze vol
= 1.67 - 1
= 0.67 gallon of water
7 0
3 years ago
An atom has 9 electrons and 9 protons at the start. If it loses 2 electrons, the net charge on the atom will be 8-2-2+8+. If the
Mrrafil [7]

Answer: 1) p⁺ = 22; number of protons.

e⁻ = 19 - 1 = 18; number of electrons.

Net charge is +4, because atom has 4 protons more than electrons.

Proton is a subatomic particle with a positive electric charge of +1e elementary charge.

2) p⁺ = 22; number of protons.

e⁻ = 19 + 3 = 22; number of electrons.

Net charge is 0 (neutral charge), because atom has same number of protons and electrons.

Hope this helps :)

4 0
3 years ago
What is the oxidation number for N in the compound NH3?
zhenek [66]
N⁻³H⁺¹₃

-3 __________________________________________________________
6 0
3 years ago
Other questions:
  • What cause the ratio of PV/RT to drop below 1 when 1 mole of
    6·1 answer
  • How are a flashlight and lightening similar and how are they different?
    8·1 answer
  • How many moles of aluminum hydroxide would be produced from 4.6 miles of calcium hydroxide
    15·1 answer
  • The pressure the gas exert the walls of the container will decrease because the gas particles hit the wall of the container
    6·1 answer
  • Why are ethics important when considering experiments??
    8·2 answers
  • What is the pH of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 M? Show your calculation.
    5·1 answer
  • Which substance in the<br> reaction is the acid?<br> HCI<br> KOH<br> KCI<br> H20
    8·1 answer
  • Which of the following is a renewable resource a. copper b. aluminum c. peanut oil d. natural gas​
    11·2 answers
  • Your dad is working on creating a brick border for the lake in your backyard each brick has a mass of 100 g and a volume of 20 c
    12·2 answers
  • An engineer turns the temperature of a gas down, holding the volume constant at 1,250 L. Initially, the temperature of the gas w
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!