IGCSE A Level Chemistry MCQs - Chapter 19

Moles and Equations MCQ (Multiple Choice Questions) PDF - 6

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Moles and Equations Questions & Answers PDF Download: MCQ Quiz 6

MCQ 26: The formula of hydrogen carbonate is

A) HCO^3-

B) H^-3CO

C) HC^-3O

D) HCO₃

MCQ 27: Avogadro's constant is the number

A) 6.02 x 10²³

B) 6.03 x 10³²

C) 1.2 x 10⁶

D) 1.23 x 10 ⁶²

MCQ 28: The hypothesis that the equal volume of all gases possess the same number of molecules is called

A) Avogadro constant

B) Avogadro hypothesis

C) Avogadro's equilibria

D) Avogadro's theory

MCQ 29: The simplest whole-number ratio which is representing 1 molecule is called

A) molecular formula

B) empirical formula

C) structural formula

D) model

MCQ 30: To determine the mass of product one must use the

A) mass of reactants

B) molar mass of reactants

C) the balanced equation

D) all of above

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