Carbon dioxide gas (CO2) effuses 3.2 times faster than an unknown gas. What would be the molar mass of the unknown gas.

How many moles is 14.5 cm^3 of platinum? the density of platinum is 21.45 g/cm^3.

Draw any one of the skeletal structures of a 2° alkyl bromide having the molecular formula of c6h13br and two stereogenic centers. indicate chirality by using wedge and hashed wedge notation. lone pairs do not need to be shown.

Find the midpoint of a segment with endpoints of 4-3i and -2+7i