Question

200c.c. of a gas measured at S.T.P. has a mass of 0.268g molecular weight of gas is​

Answer 1

00 cc corresponds to 0.2 L. The mass of 0.2 L at STP is 0.268 g. The mass of 22.4 L at STP will be $\frac{22.4 * 0.2680}{2}$=30g.

Since we know that 22.4 L corresponds to 1 mole of a gas, this is the molecular weight.

Answer 2

Explanation:

that answer is not in option