Based on C2H4 + 3 O2 = 2 CO2 + 2 H2O how many moles of O2 are required for the complete combustion of 45 g of C2H4?

if 14.0 g of C2H4 are reacted and the actual yield of H2O is 7.84 g, what is the percent yield of water in the reaction?

if 18.0 g of CO2 are produced, how many grams of H2O are produced?

there are no statements provided but here is why:

sulfur belongs to group 16 because it can be found in nature whether it is in a free or combined state.

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answer: any goods being imported from another country may be subject to issued by the federal government are tariffs

explanation:  

tariffs are a tax on anything that are imported from abroad. government use them to protect and boost their local industries and the thought is that they encourage consumers to buy local instead of importing and they will hope will protect jobs and economy in the country that implements them