Solve the following problems showing all your work including equations and units. 1. Calculate the mass of a liquid with a density of 3.2 g/mL and a volume of 25 mL. (answer = 80 g)

2. An irregular object with a mass of 18 kg displaces 2.5 L of water when placed in a large overflow container. Calculate the density of the object. (answer = 7.2 kg/L or 7.2 g/mL or 7.2 g/cm3)

3. A graduated cylinder has a mass of 80 g when empty. When 20 mL of water is added, the graduated cylinder has a mass of 100 g. If a stone is added to the graduated cylinder, the water level rises to 45 mL and the total mass is now 156 g. What is the density of the stone? (answer = 2.24 g/mL or 2.24 g/cm3)

Chemistry: Density Problems (there are no problems on the test where you have to calculate volume of l x w x h.)

For each problem below, write the equation and show your work. Always use units and box in your final answer.

1. The density of silver (Ag) is 10.5 g/cm3. Find the mass of Ag that occupies 965 cm3 of space.

2. A 2.75 kg sample of a substance occupies a volume of 250.0 cm3. Find its density in g/cm3.

3. Under certain conditions, oxygen gas (O2) has a density of 0.00134 g/mL. Find the volume occupied by 250.0 g of O2 under the same conditions.

4. Find the volume that 35.2 g of carbon tetrachloride (CCl4) will occupy if it has a density of 1.60 g/mL.

5. The density of ethanol is 0.789 g/mL. Find the mass of a sample of ethanol that has a volume of 150.0 mL.

6. 30.0 g of each of the following acids are needed. Find the volume of each that must be measured out in a graduated cylinder.

A. hydrochloric acid (HCl), density = 1.164 g/mL

B. sulfuric acid (H2SO4), density = 1.834 g/mL

C. nitric acid (HNO3), density = 1.251 g/mL

7. A rectangular block of lead (Pb) measures 20.0 mm X 30.0 mm X 45.0 mm. If the density of Pb is 11.34 g/cm3, calculate the mass of...

...Lab Report
Question- Why do few objects float in water where as others sink?
Hypothesis- I think the objects that have a greater density than water will sink. So whichever object has a density more than 1g/cm³ will sink in water. This is known as relative density where the density of the substance is compared to the density of water. Hence, the object that has a greater mass: volume ratio than water will sink....

...PHYSICAL PROPERTIES: DENSITY
Introduction
According to the definition Density is the physical property that allows us to compare the mass of substances for a specific volume. In this Lab activity that took place in Deree College, Agia Paraskevi Campus we deal with the density of solids and density of liquids. The main purpose of this experiment is to understand what in reality density means, how we can measure it,...

...Finance 3303 Business Finance Chapter 11 PracticeProblems
1. Two investment opportunities have the following expected cash flows. If your minimum required return is 27%, which proposal would be the best based on the Net Present Value evaluation method?
Investment A Investment B
Year 0 $( 567,000) $( 577,000)
Year 1 $ 254,000 $ 256,000
Year 2 $ 287,000 $ 281,000
Year 3 $ 260,000 $ 290,000
Year 4 $...

...MBA 676 Final PracticeProblems
Comments: Some of these problems were done as homework and some I solved in class. I would like you to review them. I will give you similar problems. I may also assign you some problems from Project scheduling after we cover it tomorrow.
1. Keith Shoe Stores carries a basic black dress shoe for men that sells at an approximate constant rate of 500 pairs of shoes every 3 months....

...35.46
13
2.72g/cm3
53.95
11
4.9g/cm3
During the lab, the whole purpose of the lab was to determine density of both regular and irregular shaped objects. Throughout the lab I found out that both of the small and large silver rod, do not have the same density, and also found out that the gold rod is not real gold.
My hypothesis is that since, the large and small silver rod has about the same density I believe that they would have about the same amount...

...
Research:
The word density means the degree of compactness of a substance. There is density in everything in your everyday life (matter.)The formula to find density is d=m/v.The density of solids and liquids is usually stated as g/cm3, while gases are usually stated as kg/m3. A real life example of density would be that ice floats on water because it is less dense than water, or it sinks because it is more dense...

...Ashley Robins
9/13/11
Honors Chemistry
Period 4
Density Lab
Purpose:
1. To determine the density of a solid using different laboratory techniques for measuring volume.
2. To use the intensive property of density to identify an unknown substance.
Procedure:
1. Obtain a bag marked with a number containing a cube and a cylinder from the teacher. Record the number on the bag in the data table.
Density of a cube:
Using a...

...PracticeProblems
Ch. 7, PracticeProblem: 14
Evolutionary theories often emphasize that humans have adapted to their physical environment. One such theory hypothesizes that people should spontaneously follow a 24-hour cycle of sleeping and waking—even if they are not exposed to the usual pattern of sunlight. To test this notion, eight paid volunteers were placed (individually) in a room in which there was no light from the outside...

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