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Irina-Kira [14]
2 years ago
11

NEED HELP ASAP!!! TYSM!!!! What are the coefficients when the following equations are balanced?

Chemistry
1 answer:
vitfil [10]2 years ago
5 0
CH4+2O2–>CO2+2H2O

4Fe+3O2–>2Fe2O3
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The work done to compress a gas is 83.0 J. As a result, 27.0 J of heat is given off to the surroundings. Calculate the change in
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Answer:

ΔU° = 56.0 J

Explanation:

Step 1: Given data

  • Work done to compress the gas (w): 83.0 J (When work is done on the gas, w is positive).
  • Heat given off to the surroundings (q): -27.0 J (When heat is released to the surroundings, q is negative)

Step 2: Calculate the change in the internal energy of the gas (ΔU°)

The internal energy of a gas is the energy contained within it. We can calculate it using the following expression.

ΔU° = q + w

ΔU° = -27.0 J + 83.0 J

ΔU° = 56.0 J

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A car at rest ends accelerates for 12 seconds. After this time the car is going 36 m/s. What was its acceleration?
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Acceleration is defined as velocity per unit time.

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Here, a=acceleartion,

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