Stoichiometry Stoichiometry MCQS#Atomic Mass Conversion46Choose the best answerA hydrogen atom has a mass of 1.008 u. What is its mass in kilograms?A1.008 × 1.661 × 10⁻²³ kgB1.008 × 1.661 × 10⁻²⁷ kgC1.008 ÷ 1.661 × 10⁻²⁷ kgD1.661 × 10⁻²⁷ kg Like 0 Discuss 0Share
Stoichiometry Stoichiometry MCQS#Atomic Mass Comparison47Choose the best answerAn atom of X has mass 2 u and an atom of Y has mass 16 u. Which statement is correct?AOne atom of Y is 8 times heavier than one atom of XBOne mole of Y is 8 times heavier than one mole of XCBoth A and BDNeither A nor B Like 0 Discuss 0Share
Stoichiometry Stoichiometry MCQS#Atomic Mass Comparison48Choose the best answerElements A and B have atomic masses 10 u and 20 u. Which statement must be true?AA has half the number of protons of B.BA has half the number of neutrons of B.COne atom of B is twice as heavy as one atom of A.DAtomic masses of A and B are unrelated to their relative masses. Like 0 Discuss 0Share
Stoichiometry Stoichiometry MCQS#Formula Unit49Choose the best answerFor an ionic compound such as NaCl, the smallest representative unit is called:AMoleculeBFormula unitCAtomDMole Like 0 Discuss 0Share
Stoichiometry Stoichiometry MCQS#Avogadro's Number50Choose the best answerWhat is the correct meaning of 1 mol of CaCO₃?A6.02 × 10²³ molecules of CaCO₃B6.02 × 10²³ formula units of CaCO₃C6.02 × 10²³ Ca atoms onlyD6.02 × 10²³ grams of CaCO₃ Like 0 Discuss 0Share