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8 in a chemical reaction, 4 grams of sodium must combine with how many …
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Question

8 in a chemical reaction, 4 grams of sodium must combine with how many grams of chlorine to produce 10 grams of table salt? a 4 grams b 6 grams c 8 grams d 10 grams

Explanation:

Step1: Apply law of conservation of mass

According to the law of conservation of mass, the total mass of reactants equals the total mass of products. Let the mass of chlorine be $x$. So, $4 + x=10$.

Step2: Solve for $x$

Subtract 4 from both sides of the equation: $x = 10 - 4$.

Answer:

B. 6 grams