shakecakes shakecakes 02-10-2020 Chemistry contestada Can someone help me with these two questions?A 2.75 kg sample of a substance occupies a volume of 250.0 cm3. Find its density in g/cm3.Under certain conditions, oxygen gas (O2) has a density of 0.00134 g/mL. Find the volume occupied by 250.0 g of O2 under the same conditions.