BasicsStoichiometry #Mole Concept21Choose the best answerA sample contains 0.1 mol of triatomic molecules. How many moles of atoms are present?A0.1 mol atomsB0.3 mol atomsC3 mol atomsD1 mol atoms Like 2 Discuss 0Share
BasicsStoichiometry #Molecular Mass22Choose the best answerWhich substance has numerically equal molecular mass and formula mass?ACaCO₃BMgOCNH₃DCaCO₃ and MgO Like 0 Discuss 0Share
BasicsStoichiometry #Relative Atomic Mass23Choose the best answerWhich statement gives the correct definition of one atomic mass unit (u)?A1/16 of the mass of oxygen-16B1/12 of the mass of carbon-12C1/14 of the mass of nitrogen-14D1/10 of the mass of neon-20 Like 0 Discuss 0Share
BasicsStoichiometry #Mole Concept24Choose the best answerWhich statement correctly describes the particles present in 1 mole of CaCO₃?A6.02 × 10²³ molecules of CaCO₃B6.02 × 10²³ formula units of CaCO₃C6.02 × 10²³ Ca atoms onlyD6.02 × 10²³ g of CaCO₃ Like 0 Discuss 0Share
BasicsStoichiometry #Atomic Mass Unit25Choose the best answer1/N_A gram is approximately equal to:AApproximately the mass of a protonBMolar massCAtomic mass unit (amu)DA and C Like 0 Discuss 0Share