MasteringChemistry CHM1033 CH. 1

State the name of the unit and the type of measurement indicated for each of the following quantities. The type of measurement is

temperature

The type of measurement is

temperature

Compute 21405.6 + 9.3456 . Round the answer appropriately.

21414.9

Round off each of the following numbers to three significant figures. 87.2668

87.3

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

Compute 1240.64 / 12.5. Round the answer appropriately.

99.3

Round off each of the following numbers to three significant figures. 6165

6170

Which number in each pair is smaller?

7x10^-10

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. 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. 480 ms The name of the unit is

millisecond

The type of measurement is

area

3.6 cm The name of the unit is

centimeter

State the name of the unit and the type of measurement indicated for each of the following quantities. The type of measurement is

length

What are the abbreviations for a milliliter, a megameter, and a centigram, respectively?

mL, Mm, cg

State the name of the unit and the type of measurement indicated for each of the following quantities. The type of measurement is

mass

Complete the following metric relationships.

2.26mL = 2260 ul

A hummingbird has a mass of 0.0026kg . What is the mass of the hummingbird in grams?

2.6g

Complete the following metric relationships.

2.72g = 2.72x10^-3 kg

Complete the following metric relationships.

2.80g = 2800 mg

Type the number 0.000354 in scientific notation

3.54x10^-4

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

Type the number 3.14x10^3 in standard notation

3140

For the following problems, give answers with the correct number of significant figures: 44.40 ----- 1.31

33.9

Which number in each pair is smaller?

5.7x10^-9

Rank the following quantities in order of decreasing mass.

1 Gg, 1 kg, 100 g, 50 cg, 1 dg, 50 million ng, 1 cg

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

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

In each set of numbers, identify the exact number(s), if any. 5 miles and 5 cars

5 cars

State the name of the unit and the type of measurement indicated for each of the following quantities. The type of measurement is

time

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

Write the number 8.75x10^-4 in standard notation

0.000817

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

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

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? 4.00 m

3

How many significant figures are in each of the following measured quantities? 60 800 000 g

3

In each set of numbers, identify the exact number(s), if any. 3 onions and 3 lb of onions

3 onions

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

For the following problems, give answers with the correct number of significant figures: (0.3720)(25) ----- 2.68

3.5

Which number in each pair is smaller?

3.5x10^2

How many significant figures are in each of the following measured quantities? 20.06 L

4

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

Round off each of the following numbers to three significant figures. 0.00473847

4.74x10^-3

In each set of numbers, identify the exact number(s), if any. 5 pizzas and 50.0 g of cheese

5 pizzas

A cooler has a volume of 5500mL . What is the capacity of the cooler in liters?

5.5

Which number in each pair is smaller?

5x10^-8

How many significant figures are in each of the following measured quantities? 1036.48 g

6

In each set of numbers, identify the exact number(s), if any. 6 nickels and 16 g of nickel

6 nickels

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

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

Evaluate 6×0.222×7.0 and round the answer appropriately.

9

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

35 lb The name of the unit is

pound

State the name of the unit and the type of measurement indicated for each of the following quantities. The type of measurement is

volume

The type of measurement is

volume

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. 8.05 x 10^2

yes

373 K The name of the unit is

kelvin

4 kg The name of the unit is

kilogram

0.8 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. 1.5 L The name of the unit is

liter

The type of measurement is

mass

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

For the following problems, give answers with the correct number of significant figures: 0.00332×6

2×10^−2

Determine the number of significant figures in the measurement 6.07 m.

3

Evaluate 0.411+9.9+0.8 and round the answer appropriately.

11.1

How many significant figures are in each of the following measured quantities? 5.0x10^-3 L

2

Compute 4.62 x 4.48607. Round the answer appropriately.

20.7

Complete the following metric relationships.

1.13Mg = 1.13×10^6 g

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 1340000 in scientific notation

1.34x10^6

The height of a student is 171 centimeters. How tall is the student in meters?

1.71

Round off each of the following numbers to three significant figures. 1.710x10^5

1.71x10^5

Round off each of the following numbers to three significant figures. 1.780

1.78

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