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MasteringChemistry CHM1033 CH. 1
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Chapter 1 questions and answers
Terms in this set (81)
0.8 L
The name of the unit is
liter
The type of measurement is
volume
3.6 cm
The name of the unit is
centimeter
The type of measurement is
area
4 kg
The name of the unit is
kilogram
The type of measurement is
mass
35 lb
The name of the unit is
pound
The type of measurement is
mass
373 K
The name of the unit is
kelvin
The type of measurement is
temperature
Type the number 1340000 in scientific notation
1.34x10^6
Type the number 0.000354 in scientific notation
3.54x10^-4
Rank the following numbers from greatest to least
1.23x10^6, 2.34x10^5, 3.45x10^4, 4.56x10^3, 5.67x10^2
Type the number 3.14x10^3 in standard notation
3140
Write the number 8.75x10^-4 in standard notation
0.000817
Compute 4.62 x 4.48607. Round the answer appropriately.
20.7
Compute 1240.64 / 12.5. Round the answer appropriately.
99.3
Compute 21405.6 + 9.3456 . Round the answer appropriately.
21414.9
Determine the number of significant figures in the measurement 6.07 m.
3
Determine the number of significant figures in the measurement 0.0030 s.
2
Round the value 44.981 g to three significant figures.
45.0
For each measurement, indicate if the zeros are significant.
20.05
yes
For each measurement, indicate if the zeros are significant.
5.00
yes
For each measurement, indicate if the zeros are significant.
0.000 02 L
no
For each measurement, indicate if the zeros are significant.
120 000 years
no
For each measurement, indicate if the zeros are significant.
8.05 x 10^2
yes
In each set of numbers, identify the exact number(s), if any.
5 pizzas and 50.0 g of cheese
5 pizzas
In each set of numbers, identify the exact number(s), if any.
6 nickels and 16 g of nickel
6 nickels
In each set of numbers, identify the exact number(s), if any.
3 onions and 3 lb of onions
3 onions
In each set of numbers, identify the exact number(s), if any.
5 miles and 5 cars
5 cars
Evaluate
6×0.222×7.0
and round the answer appropriately.
9
Evaluate
0.411+9.9+0.8
and round the answer appropriately.
11.1
Evaluate
16.8
---- −0.46
315
and round the answer appropriately.
0.7
For the following problems, give answers with the correct number of significant figures:
48.8×0.016
0.78
For the following problems, give answers with the correct number of significant figures:
0.00332×6
2×10^−2
For the following problems, give answers with the correct number of significant figures:
44.40
-----
1.31
33.9
For the following problems, give answers with the correct number of significant figures:
(0.3720)(25)
-----
2.68
3.5
What are the abbreviations for a milliliter, a megameter, and a centigram, respectively?
mL, Mm, cg
Rank the following quantities in order of decreasing mass.
1 Gg, 1 kg, 100 g, 50 cg, 1 dg, 50 million ng, 1 cg
A 15.630g milk chocolate bar is found to contain 9.815g of sugar.
How many milligrams of sugar does the milk chocolate bar contain?
9815
A 15.630g milk chocolate bar is found to contain 9.815g of sugar.
What will be the amount of sugar in milligrams if the size of the milk chocolate bar is reduced from 15.630g to 5.000g ?
3140
A 15.630g milk chocolate bar is found to contain 9.815g of sugar.
Given that a 15.630g milk chocolate bar contains 9.815g of sugar, calculate the percentage of sugar present in 15.630g of milk chocolate bar keeping in mind that the answer should have four significant figures (two decimal places).
62.80
The height of a student is 171 centimeters. How tall is the student in meters?
1.71
A cooler has a volume of 5500mL . What is the capacity of the cooler in liters?
5.5
A hummingbird has a mass of 0.0026kg . What is the mass of the hummingbird in grams?
2.6g
You are given the masses, in grams (g), and the volumes, in cubic centimeters (cm3), for a series of substances. Arrange them in order of increasing density.
Butane, Ice, Chloroform, NaCl, Copper, Gold
The specific gravity of iron is 7.87, and the density of water at 4.00 ∘C is 1.00 g/cm3. You can use this information to find the density of iron.
Find the volume occupied by 7.50g of iron.
0.953 cm^3
Which number in each pair is smaller?
5.7x10^-9
Which number in each pair is smaller?
3.5x10^2
Which number in each pair is smaller?
5x10^-8
Which number in each pair is smaller?
7x10^-10
How many significant figures are in each of the following measured quantities?
20.06 L
4
How many significant figures are in each of the following measured quantities?
1036.48 g
6
How many significant figures are in each of the following measured quantities?
4.00 m
3
How many significant figures are in each of the following measured quantities?
20.8 ∘C
3
How many significant figures are in each of the following measured quantities?
60 800 000 g
3
How many significant figures are in each of the following measured quantities?
5.0x10^-3 L
2
Round off each of the following numbers to three significant figures.
1.780
1.78
Round off each of the following numbers to three significant figures.
87.2668
87.3
Round off each of the following numbers to three significant figures.
0.00473847
4.74x10^-3
Round off each of the following numbers to three significant figures.
6165
6170
Round off each of the following numbers to three significant figures.
1.710x10^5
1.71x10^5
Complete the following metric relationships.
1.13Mg = 1.13×10^6 g
Complete the following metric relationships.
2.26mL = 2260 ul
Complete the following metric relationships.
2.72g = 2.72x10^-3 kg
Complete the following metric relationships.
2.80g = 2800 mg
Using conversion factors, solve the following clinical problems.
The physician has ordered 1.00g of tetracycline to be given every 6 hours to a patient. If your stock on hand is 500-mg tablets, how many will you need for 1 day's treatment?
8
Using conversion factors, solve the following clinical problems.
An intramuscular medication is given at 5.60mg/kg of body weight. If you give 405mg of medication to a patient, what is the patient's weight in pounds?
159
Using conversion factors, solve the following clinical problems.
A physician has ordered 0.42mg of atropine, intramuscularly. If atropine were available as 0.10 mg/mL of solution, how many milliliters would you need to give?
4.2
In which of the following pairs do both numbers contain the same number of significant figures?
3.44 x 10^-3 g and 0.0344g
0.0098 s and 9.8 x 10^4 s
6.8 x 10^3 m and 68000m
State the name of the unit and the type of measurement indicated for each of the following quantities.
4.8 m
The name of the unit is
meter
State the name of the unit and the type of measurement indicated for each of the following quantities.
The type of measurement is
length
State the name of the unit and the type of measurement indicated for each of the following quantities.
325 mg
The name of the unit is
milligram
State the name of the unit and the type of measurement indicated for each of the following quantities.
The type of measurement is
mass
State the name of the unit and the type of measurement indicated for each of the following quantities.
1.5 L
The name of the unit is
liter
State the name of the unit and the type of measurement indicated for each of the following quantities.
The type of measurement is
volume
State the name of the unit and the type of measurement indicated for each of the following quantities.
480 ms
The name of the unit is
millisecond
State the name of the unit and the type of measurement indicated for each of the following quantities.
The type of measurement is
time
State the name of the unit and the type of measurement indicated for each of the following quantities.
28 ∘C
The name of the unit is
Celcius
State the name of the unit and the type of measurement indicated for each of the following quantities.
The type of measurement is
temperature
What is the density of the solid object that is weighed and submerged in water?
[solid object = 8.24 g]
[volume of water = 18.5 mL]
[combined volume of solid object and water = 23.1mL]
1.8 g/mL
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