Question

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SnO2 + 2H2 → Sn + 2H2O

Tin oxide reacts with hydrogen to produce tin and water. How many moles of SnO2 are needed to produce 500.0 grams of Sn?

A.
1.57
B.
4.21
C.
634.8
D.
59,350

Answer 1

Answer:- B: 4.21 is the correct option.

Solution:- The given balanced equation is:

From the balanced equation, there is 1:1 mol ratio between  and Sn.

To calculate the moles of  required to produce500.0 grams of Sn, we need to convert the grams to moles and multiply it by the mole ratio as:

=  500.0g Sn(1 mole Sn / 118.71 g Sn )  ( 1 mole SnO2 / 1 mole Sn )

= 4.21 mole SnO2

So, the correct option is B: 4.21 moles.