How many grams of sulfur (S) will be required to react with 5 g of sodium (Na) to produce Na2S?
A) 3.5
B) 7.0
C) 1.7
D) 6.4
Solution: Let's write an equation for the reaction of sodium and sulfur to produce Na2S.
Na + S --> Na2S
Now, we need to balance it.
2Na + S --> Na2S
According to the coefficients in the balanced equation, we need to react two moles of sodium for 1 mole of sulfur.
5g Na( 1mol Na/23gNa)(1mol S/2mol Na)(32g S/1molS) = 3.478g, A
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