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Westkost [7]
3 years ago
6

Could someone please HELP ME

Chemistry
1 answer:
scoundrel [369]3 years ago
8 0

a) chemical energy

b) by electricity

c)

(i) Light

(ii) thermal transfer

<em>By </em><em>Benjemin</em>

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Sayid recorded the temperatures of four substances in a chart. which conclusion is best supported by the data?
balandron [24]
The conclusion best supported by the data can either be high temperature, low temperature, and normal temperature. Since there are diverse substances included in the chart, It is expected to also have diverse temperatures. 
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If copper carbonate system is heated for too short a time, what will you notice for mass percent of copper be too large or too s
sammy [17]

Answer:

The mass percent of copper as element is the same.

Explanation:

First of all we need the reaction that is presented below:

CuCO_{3 (s)} +Heat → CuO_{(s)} + CO_{2 (g)}

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On the other hand, you will note that the global percentage mass will be small because of the reaction produce (CO_{2 (g)}) that is a gas and this one will escape for the system.  

Have a great day!

3 0
3 years ago
Part
r-ruslan [8.4K]

The molar concentration will be greater than 0.01 M KIO_{3}.


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7 0
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If a sample of air in a school container was heated, would the percentage of oxygen in the air increase, decrease, or remain unc
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Thus, if we increased the temperature of the air by heating it, its pressure would increase.

If a sample of air in a closed container was heated, the total pressure of the air would increase.

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3 years ago
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