StoichiometryMass–Volume Stoichiometry71Choose the best answerWhat volume of O₂ at STP (273 K and 1 atm) is required to burn 16 g sulfur, and what volume of SO₂ is produced? S + O₂ → SO₂A11.2 L and 22.4 LB22.4 L and 44.8 LC44.8 L and 22.4 LD11.2 L and 11.2 L Like 0 Discuss 0Share
Stoichiometry#Atomic Structure#Isotopes72Choose the best answerWhat is meant by isotopic abundance?AThe number of isotopes present in an elementBThe percentage of atoms of a particular isotope occurring naturally in a sample of an elementCThe ratio of protons to neutrons in an isotopeDThe total mass of all isotopes present in one mole of an element Like 1 Discuss 2Share
StoichiometryVolume Unit Conversion73Choose the best answer1 m³ is equal to:A10⁶ cm³B10³ cm³C10² cm³D10 cm³ Like 0 Discuss 0Share
StoichiometryStoichiometric Coefficients and Mole Ratios74Choose the best answerThe equation: 2Al + 3/2 O₂ → Al₂O₃ shows that:A2 mol Al react with 3/2 mol O₂ to produce 7/2 mol Al₂O₃B2 g Al react with 3/2 g O₂C2 g Al react with 3/2 L O₂D2 mol Al react with 3/2 mol O₂ to produce 1 mol Al₂O₃ Like 0 Discuss 0Share
Stoichiometry#Atomic Structure#Isotopes75Choose the best answerAmong 280 naturally occurring isotopes, how many have both even atomic number and even mass number?A150B154C160DNone of these Like 0 Discuss 0Share