Number of moles in a given volume of a gas at STP

The same question, asked 2 times: 21 Apr 2025 S1*, 23 Apr 2025 S1. Every wording below, oldest first.

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Question 1
21 Apr 2025 S1
51 $Find the number of moles present in 0.448 L of dihydrogen at STP.$
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Question 2
23 Apr 2025 S1
99 $1{\text{ }m}^{3}$
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