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Alona [7]
3 years ago
15

A compound is a pure substance made up of two or more different atoms joined by chemical bonds. Consider the composition of the

air in Earth’s atmosphere. Which of the components of air is a compound? (Hint: refer back to your elements notes) How do you know?

Chemistry
1 answer:
wolverine [178]3 years ago
5 0

Answer:

Carbon dioxide is a compound

Explanation:

It is formed by chemical combination of carbon and oxygen atoms

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Determine what type of compound is shown below:
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Polar

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3 0
1 year ago
If irons temperature goes from 50c to 75c in a 20g sample, how many joules of heat were used?
Marina CMI [18]

Answer:

Option D. 230 J

Explanation:

We'll begin by calculating the temperature change of the iron. This can be obtained as follow:

Initial temperature (T₁) = 50 °C

Final temperature (T₂) = 75 °C

Change in temperature (ΔT) =?

ΔT = T₂ – T₁

ΔT = 75 – 50

ΔT = 25 °C

Thus, the temperature change of the iron is 25 °C.

Finally, we shall determine the amount of heat energy used. This can be obtained as follow:

Mass (M) = 20 g

Change in temperature (ΔT) = 25 °C

Specific heat capacity (C) = 0.46 J/gºC

Heat (Q) =?

Q = MCΔT

Q = 20 × 0.46 × 25

Q = 230 J

Thus, the amount of heat used was 230 J

3 0
3 years ago
Will give brainliest
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Answer:

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