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Elodia [21]
2 years ago
6

1. What objects in this picture are in motion?

Chemistry
1 answer:
Likurg_2 [28]2 years ago
8 0
Sled going down is in motion
Sled hitting rock is unbalanced
He flew because the of the sudden stop threw them off
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A sample of helium has a volume of 50.00 L at STP. How many helium atoms are in the sample? Show work
Setler79 [48]

Answer:

Explanation:

molar volume at STP=22.4 L

given volume=50.0 L

number of moles=given volume/molar volume

number of moles=50.0/22.4

number of moles=2.2

1 mole of helium =6.023*10^23 atoms

2.2 moles of helium =6.023*10^23*2.2=1.3*10^24

therefore 50.0 L of helium contain 1.33*10^24 atoms

4 0
3 years ago
Please help! it’s due date is in a few minutes
Musya8 [376]

Answer:

The answer is A

Explanation:

Because the x would be smalle than |-40|

4 0
2 years ago
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How many miles of lead are equal to 9.51 x 10^3 g Pb?
Lemur [1.5K]
Molar mass Pb = 207.2 g/mol

1 mole Pb ------------- 207.2
? mole Pb ------------ 9.51 x 10³

moles = 9.51 x 10³ * 1 / 207.2

moles = 9.51 x 10³ / 207.2

= 45.89 moles

hope this helps!

7 0
3 years ago
Two masses exerting a force on each other is an example of What????
trasher [3.6K]

Newtons universal law of gravitation

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H2O is A chemical reaction of the most oxygen atoms
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