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Please help me

What is missing from the equation, and how do you know?

A
Three grams of H2S because the mass of the products must equal the mass of the reactants.
B
213 grams of H2S because the mass of the products must be four times the mass of the reactants.
C
143 grams of H2S because the mass of the products must be three times the mass of the reactants.
D
73 grams of H2S because the mass of the products must be double the mass of the reactants.

Please help me What is missing from the equation, and how do you know? A Three grams-example-1
User Satej S
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1 Answer

12 votes

Answer:

The answer is A, because 55+15=70, and 70-67=3

User Superjisan
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