Stoichiometry Stoichiometry MCQS#Atomic Mass21Choose the best answerIf the atomic mass of element X is 8 u, which statement is correct?AOne atom of X has mass 8 g.BOne atom of X is 8 times heavier than 1 amu.COne mole of X has mass 8 amu.DThe mass of one atom of X is 8 kg. Like 0 Discuss 0Share
Stoichiometry Stoichiometry MCQS#Avogadro's Number22Choose the best answerOne mole of P₄ contains:A6.02 × 10²³ P atomsB6.02 × 10²³ P₄ moleculesC4 × 6.02 × 10²³ P₄ moleculesD4 moles of P₄ molecules Like 0 Discuss 0Share
Stoichiometry Stoichiometry MCQS#Atomic Structure#Isotopes23Choose the best answerWhich statement correctly links atomic mass in amu with isotopes?Aamu ignores isotopes.Bamu depends on only one isotope of each element.CAtomic mass in amu reflects the weighted contribution of all naturally occurring isotopes.Damu is calculated using only neutrons. Like 0 Discuss 0Share
Stoichiometry Stoichiometry MCQS#Mole Concept24Choose the best answerWhich statement correctly defines an element?AIt contains different types of atomsBIt cannot be broken into simpler substances by ordinary chemical meansCIt must always exist as moleculesDIt is always a metal Like 0 Discuss 0Share
Stoichiometry Stoichiometry MCQS#Atomic Structure#Subatomic Particles25Choose the best answerAn atom has atomic number 35 and mass number 80. Which option gives its correct composition?A35 protons, 35 electrons, 45 neutronsB35 protons, 35 electrons, 80 neutronsC35 protons, 36 electrons, 45 neutronsD35 protons, 36 electrons, 80 neutrons Like 0 Discuss 0Share