35.5 g of tetrachloroethane is added if 15 grams of chlorine is used with excess 
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What is a balanced chemical equation?</h3>
A balanced equation is an equation for a chemical reaction in which the number of atoms for each element in the reaction and the total charge is the same for both the reactants and the products.
Balanced chemical equation:
→ 
In your case, 2 moles of chlorine gas are needed to produce 1 mole of tetrachloroethane, which implies that there's a 2:1 mole ratio between the two.
Calculating the mass of tetrachloroethane.
= 
X 
X 
X 
= 
= 
Hence, 35.5 g of tetrachloroethane is added if 15 gram of chlorine is used with excess
Learn more about balanced chemical equations here:
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I believe it to be C
Explanation: The concentration of carbon dioxide in Earth’s atmosphere is currently at nearly 412 parts per million (ppm) and rising. This represents a 47 percent increase since the beginning of the Industrial Age, when the concentration was near 280 ppm, and an 11 percent increase since 2000, when it was near 370 ppm.
The nucleus of an atom is made up of Protons and Neutrons.
Hope this answers your question :) ~
Answer: An Element
Explanation:
An element is a substance that cannot be split into smaller substance. It is made up of one kind of atom and can exist either as molecules (e.g nitogen) or an atom (e.g argon).
