Stoichiometry 11#Atomic Mass Conversion51Choose the best answerWhat is the approximate mass of one ²³Na atom in kilograms?A3.82 × 10⁻²⁶ kgB2.30 × 10⁻²⁶ kgC1.66 × 10⁻²⁷ kgD3.82 × 10⁻²³ kg Like 0 Discuss 0Share
Stoichiometry Stoichiometry MCQS#Mole Concept52Choose the best answerHow many moles of hydrogen atoms are present in 0.25 mol of CH₄?A0.25 molB0.50 molC1.00 molD4.00 mol Like 0 Discuss 0Share
Stoichiometry Stoichiometry MCQS#Atomic Structure#Isotopes53Choose the best answerWhich property remains the same in all isotopes of an element?ANumber of protonsBNumber of neutronsCMass numberDAtomic mass Like 0 Discuss 0Share
Stoichiometry Stoichiometry MCQS#Formula Mass54Choose the best answerWhich term is used for the mass of an ionic compound such as MgO?AMolecular massBFormula massCAtomic massDIsotopic mass Like 0 Discuss 0Share
Stoichiometry Stoichiometry MCQS#Relative Atomic Mass55Choose the best answerAn atom has a relative atomic mass of 24. What does this mean?A12 times heavier than 1 uB24 times heavier than 1 uC24 g in massD1/24 of carbon-12 Like 0 Discuss 0Share