StoichiometryMole Concept and Number of Atoms311Choose the best answerWhat is the total number of atoms present in 6 g H₂O?ANAB2NAC3NAD(1/3)NA Like 0 Discuss 0Share
Stoichiometry Stoichiometry MCQS#Atomic Mass Conversion312Choose 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
StoichiometryMole–Mole Stoichiometry313Choose the best answer27 g Al reacts with O₂ according to: 4Al + 3O₂ → 2Al₂O₃ How many moles of O₂ are required?A3 molB0.27 molC0.75 molD1.5 mol Like 0 Discuss 0Share
StoichiometryMole–Volume Stoichiometry314Choose the best answerHow many moles of Mg are required to produce 11.2 dm³ H₂ at STP (273 K and 1 atm)? Mg + 2HCl → MgCl₂ + H₂A1 molB2 molC0.5 molD0.25 mol Like 0 Discuss 0Share
Sindh MDCAT 2020 Chemistry#Mole Concept#Stoichiometry315Choose the best answerFor a gaseous phase reaction, when number of moles of reactants and products are equal: (Sindh MDCAT 2020)AThe values of Kₚ and K꜀ are differentBThe values of Kₚ is greater than K꜀CThe values of K꜀ is greater than KₚDThe values of Kₚ and K꜀ are the same Like 0 Discuss 0Share