Chem 3A

12) The boiling point of water is: (1)212 oF (2) 0C (3) 373 K

1 and 3 only

2.02 + 8.102 - 0.0297=

10.09

How many inches in 2.80 ft?

33.6

When the value 4.449 is rounded to two Sig Fig the number should be?

4.4

A lead ball has a mass of 55.0 grams and a density of 11.4g/cm^3. What is the volume of the ball?

4.82ml

The correct Scientific notation for the number 0.00050210?

5.0210*10^-4

Which state of matter has atomic spacing that is close together and indefinite shape? A) liquid B) solid C) gas D) plasma E) none of the above

A)

Which of the following items is a physical property? A) the odor of spearmint gum the corrosive action of acid rain on granite C) the tarnishing of a copper statue D) the combustion of gasoline E) none of the above

A) the odor of spearmint gum

Which of the following items is a pure substance? A) air B) ice C) brass D) seawater E) one of the above

B) ice

What of the following is not an example of matter? A) a balloon full of helium b) a pencil eraser c) Heat from a burning candle d) a dust particle E) None

C)

How many kilojoules are there in 95.0 Calories?

C) 397

Melting point can be defined as the temperature when a solid becomes a liquid. The melting point of the chemical acenrine is -95 C. Which state of mattrr would you excpect for acetone at a temperature of -94 C?

D ) liquid