1. Lead (Pb), has a density of 11.35 g/ml. If I have 3.45 cc of lead, what is the weight in

grams?
4. I am traveling at 100 mph per hour before getting pulled over. Convert this into meters
Per second.
(A) 161 m/s (C) 161000 m/s
(B) 4.44 m/s (D) 44.4 m/s (E) 444.44 m/s
5. I can eat 10 cans of Vienna sausages in 1 hour. Each can has 60 mg of sodium nitrate.
What is my intake of sodium nitrate per second?
7. The mass of the ocean is about 1.8 x 1021 kg. If the ocean contains 1.076 % sodium
ion, Na+, what is the mass in kilograms of sodium in the ocean?
(A)1.67x1021Kg (B) 1.67x1019
(C) 1.9368x1019 kg (D) 1.9368x1017 kg
8. A ball of clay has a mass of 2.65 pounds and a volume of 0.5025 quarts. What is the
density in grams per milliliter?

What have you done on these? You don't show any thinking at all.

#1. mass = volume x density
mass = 3.45 mL x 11.35 g/mL = ??
(note: 3.45 mL is the same as 3.45 cc).

1. To find the weight of lead in grams, you need to multiply the volume of lead (3.45 cc) by the density of lead (11.35 g/ml). The result will be the weight of lead in grams.

Calculation:
Weight of lead = Volume of lead x Density of lead
Weight of lead = 3.45 cc x 11.35 g/ml

So, the weight of lead in grams is (3.45 cc) x (11.35 g/ml) = 39.1575 grams.

Therefore, the weight of 3.45 cc of lead is 39.1575 grams.

4. To convert the speed from miles per hour (mph) to meters per second (m/s), you need to multiply the speed in mph by the conversion factor 0.44704 (1 mph = 0.44704 m/s).

Calculation:
Speed in m/s = Speed in mph x Conversion factor
Speed in m/s = 100 mph x 0.44704

So, the speed in meters per second is 100 mph x 0.44704 = 44.704 m/s.

Therefore, when traveling at 100 mph, the speed in meters per second is approximately 44.704 m/s.

5. To find the intake of sodium nitrate per second, you need to first find the total amount of sodium nitrate consumed in 1 hour, and then convert it to seconds.

Calculation:
Total amount of sodium nitrate consumed in 1 hour = Number of cans x Sodium nitrate per can
Total amount of sodium nitrate consumed in 1 hour = 10 cans x 60 mg

To convert the intake from milligrams to grams, divide by 1000 (1 g = 1000 mg).

Total amount of sodium nitrate consumed in 1 hour = (10 cans x 60 mg) / 1000 = 0.6 grams

To find the intake per second, divide the intake in grams by 3600 (1 hour = 3600 seconds).

Intake of sodium nitrate per second = 0.6 grams / 3600 seconds

So, the intake of sodium nitrate per second is approximately 0.0001667 grams.

7. To find the mass of sodium in the ocean, you need to multiply the mass of the ocean by the percentage of sodium ions (Na+).

Calculation:
Mass of sodium in the ocean = Mass of the ocean x Percentage of sodium ions
Mass of sodium in the ocean = 1.8 x 10^21 kg x 1.076 %

To convert the percentage to a decimal, divide by 100.

Mass of sodium in the ocean = 1.8 x 10^21 kg x (1.076 / 100)

So, the mass of sodium in the ocean is approximately 1.9368 x 10^19 kg.

Therefore, the mass of sodium in the ocean is approximately 1.9368 x 10^19 kg.

8. To find the density of the ball of clay in grams per milliliter (g/ml), you need to divide the mass of the clay in grams by the volume of the clay in milliliters.

Calculation:
Density = Mass / Volume

However, we have the mass of the clay in pounds and the volume of the clay in quarts. We need to convert these units to grams and milliliters.

1 pound is equal to approximately 453.592 grams, and 1 quart is equal to approximately 946.353 milliliters.

Mass in grams = 2.65 pounds x 453.592 grams/pound
Volume in milliliters = 0.5025 quarts x 946.353 milliliters/quart

Now we can calculate the density:

Density = (2.65 pounds x 453.592 grams/pound) / (0.5025 quarts x 946.353 milliliters/quart)

So, the density of the clay in grams per milliliter is approximately (2.65 x 453.592) / (0.5025 x 946.353) = 2.40 g/ml.

Therefore, the density of the ball of clay is approximately 2.40 grams per milliliter.