PLZZZ HELP!!! CHEMISTRY MULTIPLE CHOICe?

Question

Actual yield must be determined through: a) estimations b) theoretical yield c) calculations d) experiments

Percent yield represents the __ of a chemical reaction..a) speed b) efficiency c) individual steps d) rate

If a company was performing a chemical reaction, they would choose the chemical that is ____ as the excess..a) most expensive and least abundant b)least expensive and least abundant c) least expensive and most abundant d) most expensive and most abundant

What instrument is normally used to measure atmospheric pressure? a) manometer b) barometer c) hydrometer d) aerometer

Answer 1

1. d) experiments

2. b) efficiency

3. c) least expensive and most abundant

4. b) barometer

Answer 2

d)

b)

c)

b)