Common-Core/ Grade 7
Science MCQ Based On Amounts of reactants or products in chemical reactions
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Common-Core Grade 7 - 7 Amounts of reactants or products in chemical reactions
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Observe the number of oxygen in reactant.
34.5 g NaCl*1 mol NaCl/58.4 g NaCl=0.591 moles NaCl
Count the number of oxygen present in the products
Think about the products.
CH4+2O2→CO2+2H2O
Think about products.
10+2
Think about products
Think about product.
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