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Nookie1986 [14]
2 years ago
8

How many formula units are present in 40.0 grams of Cu2S?

Chemistry
1 answer:
11Alexandr11 [23.1K]2 years ago
4 0

Never mind, I did the problem wrong, I deeply apologize.

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Why are alkali metals so reactive?
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Explanation:

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8 0
2 years ago
What volume will 1.27 moles of helium gas occupy at 80.00 °C and 1.00 atm?
White raven [17]

Answer:

36.8 L

Explanation:

We'll begin by converting 80 °C to Kelvin temperature. This can be obtained as follow:

T(K) = T(°C) + 273

T(°C) = 80 °C

T(K) = 80 + 273

T(K) = 353 K

Finally, we shall determine the volume occupied by the helium gas. This can be obtained as follow:

Number of mole (n) = 1.27 moles

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Pressure (P) = 1 atm

Gas constant (R) = 0.0821 atm.L/Kmol

Volume (V) =?

PV = nRT

1 × V = 1.27 × 0.0821 × 353

V = 36.8 L

Thus, the volume occupied by the helium gas is 36.8 L

5 0
3 years ago
If three quarters of the elements are metals how are the remaining elements categorize?
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1 year ago
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Explanation:

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3 years ago
How are acids and bases used by humans
azamat
We use acids and bases in everyday life for cooking and cleaning
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