Chemistry Chapter 1-4

5.21 cm is the same distance as

0.0521 m

The density of a solution is 1.18 g/mL. Its specific gravity is

1.18

The correct answer for the addition of 7.5 g +2.26 g + 1.311 g +2 g is

13 g

How many kilograms are in 30.4 lb

13.8 kg

The number of calories needed to raise the temperature of 32g of water from 12 C to 54 C is

1300 cal

650 J is the same amount of energy as (convert from J to cal)

155 cal

Which of the following numbers contains the designated CORRECT number of significant figures

156,000 3 significant figures

The maximum number of electrons that may occupy the third electron level is

18

What is the energy level arrangement for potassium (atomic number 19)

2, 8, 8, 1

What is the mass of 2.00 L of an intravenous glucose solution with a density of 1.15 g/mL?

2.30 kg

If the heat of vaporization for water is 540 cal/g, how many kilocalories are released when 5.00 g of steam is converted to a liquid at 100C

2.7 kcal

A serving of fish contains 50 g protein and 4 g of fat. If protein has a caloric value of 4 kcal/g and fat has 9 kcal/g, how many kcal are in the serving? Give the answer to 2 significant figures

240 kcal

The heat of fusion for water is 80 cal/g. How many calories are needed to melt a 35 g ice cube that has a temperature of 0 C

2800 cal

How many calories are required to raise the temperature of a 35.0 g sample of iron from 25 C to 35 C? Iron has a specific heat of 0.108 cal/g C

38 cal

Diamond has a density of 3.52 g/mL. What is the volume in cubic centimeters of a diamond with a mass of 15.1 g

4.29 cubic centimeters

A calculator answer of 423.6059 must be rounded off to three significant figures. What answer is reported?

424

Which of the following gives the correct number of protons, neutrons and electrons in a neutral atom of 118Sn 50

50 protons, 68 neutrons, 50 electrons

Which of the following measurements are NOT equivalent?

84cm = 8.4mm

How many calories are required to increase the temperature of 13g of alcohol from 11C to 23C? The specific heat of alcohol is 0.59 cal/g C.

92 cal

9.31 g is the same mass as

9310 mg

Select the correct symbol for mercury

Hg

Which of the following properties is NOT a characteristic of the Group 1A (1) elements (alkali metals)

Most of them are liquids at room temperature

A sample of chlorine has two naturally occurring isotopes. The isotopes Cl-35 makes up 75.8% of the sample, and the isotope Cl-37 makes up 24.35 of the sample. Which of the following statements is true?

The atomic mass will be between 35 and 37

The specific heat of copper is 0.093 cal/g C, and the specific heat of silver is 0.057 cal/g C. If 100 cal of heat is added to each metal at 25 C, what is the expected result

The silver will reach a higher temperature

The ratio of the mass of a substance to its volume is its

density

A value of 345 mm is a measure of

distance

The primary substances of which all other things are composed are

elements

Which of the following is the largest unit

kilometer

Which of the following is the smallest unit

microgram

Which of the following elements is a nonmetal?

nitrogen

The atomic mass of an element is equal to

the mass of an average atom

The mass number of an atom can be calculated from

the number of protons plus neutrons

Isotopes are atoms of the same element that have

the same atomic number but different numbers of neutrons

In a gas the distance between the particles is

very large relative to the size of the molecules

Which of the following is an example of potential energy

water stored in a reservoir