A. 300g
B. 200g
C. 150g
D. 30g
E. 15g
Correct Answer:
Option D – 30g
If 200cm³ of a gas at s.t.p. has a mass of 0.268g. What is its molar mass? (Molar volume of a gas at s.t.p. = 22.4 dm³)
![9.60 g of a gas X occupies the same volume at 0.30 g of hydrogen under the same conditions. Calculate the molar mass of X [H = 1]](https://erudites.ng/wp-content/plugins/contextual-related-posts/default.png "9.60 g of a gas X occupies the same volume at 0.30 g of hydrogen under the same conditions. Calculate the molar mass of X [H = 1]")
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