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
