Chemistry

A chemical reaction yields 3 moles of lithium hydroxide (LiOH). How many grams of lithium hydroxide are present?

24 g

48 g

72 g

When ethane (C2H6) burns, it produces carbon dioxide and water:

2C2H6 (g) + 7O2 (g) 4CO2 (g) + 6H2O (l)

How many moles of water will be produced when 16 moles of ethane are burned?

32 moles

48 moles

64 moles

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  1. g = mols x molar mass

    Use the coefficients in the balanced equation to convert mols ethane to mols H2O
    16 mol ethane x (6 mols H2O/2 mols ethane) = ?

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