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dem82 [27]
2 years ago
11

5) Why do elements in the same family generally have similar properties?

Chemistry
1 answer:
Sever21 [200]2 years ago
4 0

Answer: Elements in the same family generally have similar properties because they contain the same number of the electrons, for instance.

Hope this helped!

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What has more force? A semi truck traveling at 60mph or a minivan traveling at 60mph?
hodyreva [135]

Answer:

Semi truck

Explanation:

5 0
3 years ago
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A truck travels 110 miles and it speed is 55mi/hr. How long did it take to
hammer [34]

Answer:

2 hours Speed =110/2=55 miles ler hour

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2 years ago
A pH scale reading 13 indicates a ______
lukranit [14]

Answer:

A pH scale reading 13 indicates a strong base.

Explanation:

From my understanding:

1 -4 is a strong acid

4 - 7 is weak acid

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9 - 14 is a strong base

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1. A 2-kg bowling ball sits on top of a building that is 40 meters tall. (5 pts) Circle one: KE / GPE / both ( can you show work
masha68 [24]
Potential energy is energy due to an object's height above the ground.
Potential energy = mass x gravity x height
Kinetic energy is energy due to the motion of the object.
Kinetic energy = 1/2 x mass x velocity²

1.
The ball is not moving and is at a height above the ground so it has only potential energy.
P.E = 2 x 9.81 x 40
P.E = 784.8 J

2.
The ball is moving and has a height above the Earth's surface so it has both kinetic and potential energy.
P.E = same as part 1 = 784.8 J
K.E = 1/2 x 2 x 5²
K.E = 25 J

3.
The ball has no height above the Earth's surface and is moving so it has only kinetic energy.
K.E = 1/2 x 2 x 10²
K.E = 100 J

4.
50000 = 1/2 x 1000 x v²
v = 10 m/s

5.
39200 = 200 x 9.81 x h
h = 20.0 m

6.
12.5 = 1/2 x 1 x v²
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3 0
3 years ago
Calculate the molar mass for each of the following compounds 7. PbSO
Simora [160]

Answer:

Fe3(PO4)2

Explanation:

calculate the molar mass for each of the following compounds 7. PbSO

8. Ca(OH)2

9. Na3PO4

10. (NH4)2CO3

11. C6H12O6

12. Fe3(PO4)2

13. (NH4)2S

14. Zn(C2H3O2)2

5 0
2 years ago
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