A gaseous compound composed of sulfur and oxygen has a density of 9.88 g/L at stp. What is the molar mass of this gas?

The molar mass of this gas is 221 g/mol

Explanation:

The relation between density and molar mass is :

where P = pressure of gas = 1 atm (at STP)

M = molar mass of gas = 32 g/mol

d = density of gas = ?

R = gas constant =

T= temperature of gas = 273 K ( at STP)

Thus the molar mass of this gas is 221 g/mol

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