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) by Sunday | Aug 25 | Chemistry WAEC | 0 comments A. 300g B. 200g C. 150g D. 30g E. 15g Correct Answer: Option D – 30g Users Also Read These:The initial volume and pressure of a given mass of…A gas has a volume of 546cm³ at O°C. What is the…The volume occupied by 0.4 g of hydrogen gas at…What volume of oxygen is produced from the…A given amount of gas occupies 10.0dm³ at 4atm and…