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vichka [17]
2 years ago
10

A gas has a volume of 72.1 liters at 58.3 atm. The final volume is 101.0L, what is the new pressure?

Chemistry
1 answer:
vampirchik [111]2 years ago
3 0

Answer:

X is an element in period 3 with two electrons in the outer shell

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How many molecules are found in 90 grams of Al(OH)3?
jarptica [38.1K]

Answer:

6.95 x 10²³ molecules/particles

Explanation:

First we need to find the total Empirical Mass. We can find this by adding each element's mass together.

Al = 26.982,

O = 15.999

H = 1.008

26.982 + 3(15.999) + 3(1.008) = 78.003.

Now we divide by the mass given (90 grams).

90/78.003 = 1.153801777.

We then take that number and multiply it by avogadro's number (6.022 x 10²³)

1.153801777 x avogadro's number = 6.95 x 10²³

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I found it on a Quizziz.

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2 years ago
5.0 gram of anhydrous calcium carbonate is reacted with an excess of dilute nitric acid. if the reaction is carried out at 25 de
Aneli [31]

Answer:

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Name each subatomic particle, its charge, and its location in an atom.
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hope that helps 
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