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Alisiya [41]
3 years ago
14

Density Practice

Chemistry
1 answer:
Angelina_Jolie [31]3 years ago
4 0

Answer:

1) mass and volume

2)  float.

3) Sink

4) Apples

5) Cannonball

Explanation:

1) Density is based on the mass and volume of a material.

2) A material or an object with low density than water or liquid tends to float.

3) A material or an object with high density than water or liquid tends to sink.

4) The apples in the water have less density as they are floating in the water.

5) The cannonball is more dense than the ocean water and the ball sink in the less density water.

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How do you think Oxygen can be in the crust when it is a gas at room temperature in the atmosphere?
otez555 [7]

Answer: Through diffusion

Explanation:

Oxygen can be defined as the most abundant element on earth. It is a gas at room temperature. It becomes the part of the earth crust by the process of diffusion.

Diffusion is a process of movement of molecules from a region of high concentration to the low concentration. The oxygen remains in high concentration in the atmosphere diffuses into earth crust at low concentration.

5 0
3 years ago
The density of silicon is 2.33 g/cm 3 . What is the volume of a piece of silicon that has a mass of 83.8 g ?
horrorfan [7]
Density is found by dividing mass over volume:
d=M/V. In this problem, we know the density, and the mass. Solve the general equation for volume, then enter the values from the problem and evaluate:
d=m/v [multiply v to both sides, then divide d from both sides]

v=m/d
v=83.8g/(2.33g/cm³)
v=35.965 cm³
v=36.0 cm³ to three significant figures (since your given information only has 3  sig figs)
5 0
3 years ago
Please help me ill give brainiest to the right answer
Zinaida [17]
A and D make the most sence
6 0
3 years ago
Read 2 more answers
What are minerals. Please explain
Kaylis [27]

Answer:

minerals are inorganic solids.

Explanation:

they have a definite chemical composition, its a solid chemical compound that occurs naturally in pure form. minerald are most commonly associated with rocks.

3 0
3 years ago
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One radioactive isotope of calcium has an atomic mass of 47,how many neutrons are in the calcium -47 nucleus
jekas [21]

Answer: 27 neutrons

Explanation:

Recall that the number of protons in the nucleus of an atom = Atomic number.

Hence, Calcium with mass number 47 and atomic number 20 will have 20 protons

Therefore, since Mass number = number of protons + neutrons

47 = 20 + neutrons

Neutrons = 47 - 20 = 27

Thus, there are 27 neutrons in radioactive calcium nucleus.

6 0
4 years ago
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