StoichiometryMolar Mass from Gas Volume31Choose the best answerAt STP (273 K and 1 atm), 5.6 L of a gas has a mass of 8 g. Its molar mass is:A32 g mol⁻¹B16 g mol⁻¹C8 g mol⁻¹D4 g mol⁻¹ Like 0 Discuss 0Share
StoichiometryMass–Mole Conversion32Choose the best answerHow many moles of Na are present in 0.1 g Na?A4.3 × 10⁻³ molB4.01 × 10⁻² molC4.03 × 10⁻¹ molD4.3 × 10⁻² mol Like 0 Discuss 0Share
StoichiometryMolar Volume at STP33Choose the best answerWhat volume is occupied by 0.5 mol of an ideal gas at STP (273 K and 1 atm)?A22400 cm³B11200 cm³C22.4 mLDNone of these Like 0 Discuss 0Share
Fundamental Concepts of ChemistryCompounds34Choose the best answerA compound contains:ADifferent kinds of atoms physically mixedBThe same kind of atoms physically mixedCDifferent kinds of atoms chemically combinedDOnly one kind of atom chemically combined Like 0 Discuss 0Share
StoichiometryPercentage Yield35Choose the best answerIf actual yield is 15 g and theoretical yield is 20 g, what is the percentage yield?A50%B75%C80%D90% Like 0 Discuss 0Share