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Luba_88 [7]
2 years ago
11

Which of these is an example of a chemical change?

Chemistry
1 answer:
Elena-2011 [213]2 years ago
3 0

Answer:

D. Burning a peice of wood

Explanation:

Because when you burn wood a chemical reaction happenes between the flames and the wood making the wood into ashes.

Hope this helps you :)

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How much work does a gas do when it expands against a constant pressure of 0.600 atm from a volume of 50.00 mL to a volume of 44
miskamm [114]

Answer:

23.71J is the work that the gas do.

Explanation:

The work that a gas do under isobaric conditions follows the formula:

W = P*ΔV

<em>Where W is work in atmL, P is the pressure and ΔV is final volume -Initial volume In Liters</em>

Replacing with the values of the problem:

W = P*ΔV

W = 0.600atm*(0.44000L - 0.0500L)

W = 0.234atmL

In Joules (1atmL = 101.325J):

0.234atmL × (101.325J / 1 atmL) =

<h3>23.71J is the work that the gas do.</h3>

<em />

3 0
2 years ago
Which water usage uses the least amount of water in a year in the United States
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Answer: a

Explanation:

Industry uses only about 18% while the others use around 70-90% of water.

YW!!! please mark branlest!!!! =^.^=

4 0
1 year ago
How many h+ ions are present in 65. 5 mL of 0. 722 M sulfuric acid
tangare [24]

Answer:

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Explanation:

8 0
2 years ago
What is the specific heat of iron, if it requires 1120 J of heat energy to raise the
IRISSAK [1]

Answer:

Specific heat is defined as the amount of heat needed to raise the temperature by one degree celsius. Therefore, in 1 kg there are 100 grams so, 10 grams equal 0.01 Kg. Thus, calculate the specific heat value as follows. Thus, we can conclude that specific heat of the given metal is 0.5 .

Explanation:

4 0
2 years ago
How much heat does an aluminum block absorb if 10.00 grams are heated from 25.0˚C to 50˚C? The specific heat of aluminum is .900
OverLord2011 [107]

Answer:

225

Explanation:

5 0
2 years ago
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