Characterize EACH of the three given statements as being TRUE or FALSE and then indicate the collective true-false status of the statements using the choices: (1) In the notation 2H₂O, the 2 out in front is called a coefficient.
(2) Atomic masses and formula masses are specified using the same units.
(3) In a formula-based "grams of A to grams of B" problem, molar masses are needed in each of the first two conversion factors.

Question

Quizplus · Accepted Answer

1) True - In chemical notation, the number placed in front of a formula (like the 2 in 2H₂O) is indeed called a coefficient, indicating how many units of the compound are present.2) True - Both atomic masses and formula masses are expressed in atomic mass units (amu) or, in macroscopic quantities, grams per mole (g/mol), using the same units for comparison and calculations.3) False - In a "grams of A to grams of B" problem, the first conversion factor involves converting grams to moles (using molar mass of A), and the second typically involves a mole-to-mole ratio from the balanced equation, not the molar mass of B. The molar mass of B is used in the final step to convert moles of B to grams of B.

Characterize EACH of the Three Given Statements as Being TRUE