Answer:
Elements, in turn, are pure substances—such as nickel, hydrogen, and helium—that make up all kinds of matter.
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Multiplying the subscripts within the empirical formula by this number gives you the molecular formula H2O2.
Answer: 4.15234 m
512 g H2O * 
= 0.512 kg H2O
Nitric Acid: HNO3 = 1.008 + 14.007 + 3(15.999) = 63.012 g/mol
H = 1.008 g/mol
N = 14.007 g/mol
O3 = 3*15.999
134 g HNO₃ * 
= 2.126 mol
m = 
= 4.15234 m
Three uses of coal:
1. Electricity generation
2. Steel production
3. Cement manufacturing and as a liquid fuel
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No, the added heat melts the ice, but the result is water at the same temperature. Hence, option B is correct.
<h3>What is temperature?</h3>
The degree of hotness or coldness is measured on a definite scale.
Temperature doesn't change as heat is added during a phase change; for example, when the ice melts.
During the phase change, the added heat doesn't make the molecules move faster, but rather further apart.
Thus, No, the added heat melts the ice, but the result is water at the same temperature.
Learn more about the temperature here:
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