Stoichiometry Stoichiometry MCQS#Avogadro's Number246Choose the best answerHow many electrons are present in one mole of electrons?A1 electronB6.02 × 10²³ coulombsC6.02 × 10²³ electronsD1 gram of electrons Like 0 Discuss 0Share
StoichiometryMass–Mole Conversion247Choose 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 STP248Choose the best answer5.6 L O₂ at STP (273 K and 1 atm) corresponds to:A1 molB1/2 molC1/4 molD1/8 mol Like 0 Discuss 0Share
UHS MDCAT 2023 ChemistryUHS MDCAT 2023 Past Paper#Empirical and Molecular Formula#Stoichiometry249Choose the best answerWhat is the molecular formula of pyridine? (UHS MDCAT 2023)AC₅H₅NBC₄H₅NCC₅H₆NDC₆H₆N Like 4 Discuss 1Share
StoichiometryMolar Mass of Gas Mixtures250Choose the best answerAn equimolar gaseous mixture of CH₄ and C₂H₆ occupies 22.4 dm³ at STP. What is its mass?A4.6 gB1.6 gC2.3 gD23 g Like 0 Discuss 0Share