Why is oxygen written with a subscript 2 in CO2?
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A. Its mass is twice as great as the reactants'.

B. Each molecule of carbon dioxide has two oxygen atoms.

C. Its mass increases by two times as a result of the reaction.

D. Carbon always bonds to two oxygen atoms.

Aluminum reacts with chlorine gas to form aluminum chloride via the following reaction: 2al(s)+3cl2(g)→2alcl3(s) what is the maximum mass of aluminum chloride that can be formed when reacting 32.0 g of aluminum with 37.0 g of chlorine? express your answer to three significant figures and include the appropriate units.

Which statement is true about ionic compounds?

In the 1800s, one of the statements in john dalton's atomic theory was that atoms are indivisible. later experimental evidence led to the discovery of subatomic particles such as neutrons, electrons, and protons. what happened to the indivisible atom part of dalton's atomic theory, and why?