1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
suter [353]
3 years ago
8

32 You have two objects made of the same substance. Object 1 is a cube with a mass of 257.7 g. You measure the side of the cube

using a ruler and find it to be 3.17 cm. Object 2 is a sphere with a mass of 128.9 g. You find the volume of the sphere using water displacement. The volume of the water in a graduated cylinder initially is 120.0 mL, and when the sphere is added the new volume is 135.8 mL.
Chemistry
1 answer:
aleksandrvk [35]3 years ago
8 0

The complete question requires that we verify the density of both objects.

The density of object 1 is; 8.1g/cm³ while the density of object 2 is; 8.16g/cm³

<h3>Density of substances</h3>

The density of a substance is given as;

Density = Mass/Volume

Therefore, for Object 1;

  • Volume= l³ (for cubes)

Volume = (3.17)³ = 31.86cm³

Density (1) = 257.7/31.86 = 8.1 g/cm³

For Object 2;

  • Volume = 135.8 - 120 = 15.8mL

  • Volume = 15.8mL = 15.8 cm³

Density = 128.9/15.8

Density = 8.16g/cm³

Read more on density of substances;

brainly.com/question/6838128

You might be interested in
Which of the following would not be considered renewable forms of energy?
sertanlavr [38]

Answer : The correct answer is A. Nuclear reactors using Pu-239

B. burning coal

The sources which are not renewable are known as "non- renewable sources of energy .

Non - renewable sources are those which get expired after rapid use and can never be reproduced . These sources replenishes in very long time . Examples : Coal , petrol or fuels etc .

1) Nuclear reactors using Pu-239 : Nuclear reactors uses radioactive elements like uranium , plutonium etc , which are present in limit . after frequent use of these elements , they will vanish off , Hence we can say nuclear reactors are Non renewable source of energy .

2) Burning coal : Coal is used as one of the major source of fuel . On rapid utilization of coal they will finished from earth . It takes thousand of year for formation of coal . Hence , it is a Non -renewable source .

3) Photo-voltaic cell: These are cells which used solar energy . Solar energy is obtained from sun . Hence solar energy is renewable source of energy so is the photo voltaic cell .

4) Geothermal energy : Geothermal energy is source of energy that is extracted from earth's thermal energy . Since thermal energy of earth is present in very large amount and can be reproduced , hence it renewable source of energy .

5)Wind energy : Wind energy is source of energy that is obtained from wind. And wind is renewable source so the wine energy too .

Consequently , we can say only two of them " Nuclear reactors and burning of coal " are Non renewable force of energy .

3 0
3 years ago
How many moles of calcium atoms are in 77.4g of Ca?
lina2011 [118]

Answer:

1.93 mol Ca

Explanation:

Use Calcium's molar mass to convert g of Ca into mol of Ca.

6 0
3 years ago
What is the OH- ion concentration, in moles per liter, of an aqueous solution with a pH of 7?
topjm [15]

Answer:

B

Explanation:

the pH scale is based on the function

1x10-14

So since pH is neutral the concentration of OH and H must be equal hence the only option in which the concetration would [OH]{H}= 1x10-14 would be when both are equal so it cannot be a or d and when they are expressed in concetration so the only option is B.

3 0
3 years ago
Explain why seeing a gas doesn not always indicate that there was a chemical change. ​
Orlov [11]
A change of state (which is a physical change) can cause gas.
7 0
3 years ago
Can a hype Glow in the dark ?
BlackZzzverrR [31]
I’ve only had one and it didn’t flow so ion think so
6 0
2 years ago
Other questions:
  • The reason H2S exists as a gas while H2O exists as a liquid at room temperature is because:
    11·1 answer
  • What reaction involves one element replacing an element in a compound that is from the same activity series?
    11·1 answer
  • Calculate the mass of precipitate that forms when 250.0 mL of an aqueous solution containing 35.5 g of lead(II) nitrate reacts w
    5·1 answer
  • Calculate the heat in calories for condensation of 17.0 g of steam at 100 C
    14·1 answer
  • PLEASE HELP!! What happens when nitrogen fills its valence shell?
    9·2 answers
  • What does the number of protons<br> determine?
    7·1 answer
  • C5h12 formula mass= molar mass=
    8·1 answer
  • 30 POINTS
    15·1 answer
  • What information is given on a material safety data sheet?
    7·1 answer
  • Which of the following observations indicates that atoms of all elements contain small, negatively charged particles?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!