- #1

ignacioserra

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Can somebody help to figure out this pls?

Sodium reacts in water to form sodium hydroxide and hydrogen gas. Write a balanced equation for this reaction and calculate how many grams of it are needed to prepare 8 g of sodium hydroxide by this method.

Ar(H)=1 Ar(O)=16 Ar(Na)=23

Balanced equation:

2 Na + 2 H2O --- 2 NaOH + H2

Sodium hydroxide mass: 40 g

I could easily figure out the balanced equation, but I don't know how to do the rest.

Thx!