Question

Four moles of a compound 'X' weight 176 gram compound 'X' is

Answer 1

Compound X is Carbondioxide.
no. of moles = given mass/molecular mass
4=176/x
x = 176/4
= 44g

Answer 2

Mass of the 4 moles of compound = 176 gm.

⇒ Molar mass of the compound = 176/4

= 44 g/mole.

∵ 44 g/mole is the molar mass of the gaseous compound called as Carbon Dioxide.

Hence, the Compound X is Carbon Dioxide.  

Its Chemical Formula is CO₂.  It is little acidic in nature.

It turns the moist blue litmus faint Red.

Hope it helps.