3 years ago

How do you know/recognize when a double replacement reaction occurs?

Chemistry

1 answer:

lyudmila [28]3 years ago

6 0

Answer:

because of rick and morty

Explanation:

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What is the volume of an oxygen tank if it contains 12 moles of oxygen at 273 K under 75 kPa?

Zina [86]

Given:
n = 12 moles of oxygen
T = 273 K, temperature
p = 75 kPa, pressure

Use the ideal gas law, given by
$pV=nRT \\ or \\ V= \frac{nRT}{p}$
where
V = volume
R = 8.3145 J/(mol-K), the gas constant

Therefore,
$V= \frac{(12\,mol)(8.3145\, \frac{J}{mol-K} )(273\,K)}{75 \times 10^{3} \, Pa}= 0.3632\,m^{3}$

Answer: 0.363 m³

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4 years ago

The percentage of the earth’s atmosphere today is the same as it was in the earths early atmosphere. Suggest why.

jek_recluse [69]

Explanation:

Once the earth's atmosphere was formed it really hasn't changed since, this is due to many reasons. Whatever created the earth's atmosphere (we don't know) has long disappeared, because of this the atmosphere cannot change, as there is nothing on earth that can change it (that we know of at least). Hopefully this helps.

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3 years ago

Sodium has______ Valence electrons and bismuth has ________ electrons

Triss [41]

Answer:

Sodium has 1 valence electron and bismuth has 83 electrons (5 valence electrons)

Explanation:

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4 years ago

how would the woodpecker population in a forest area most likely be affected if a housing devolpment is built in that area

alexira [117]

The entire woodpecker population would be DESTROYED