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Romashka [77]
3 years ago
9

OMG PLEASE HELP ME :(

Chemistry
1 answer:
dusya [7]3 years ago
6 0

Answer:

D) The gravity on the moon is one sixth the gravity of Earth.  

Explanation:

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Calculate the volume of 12.0 g of helium at 100°c and 1.2 atm
hodyreva [135]

Volume = nRT/P

n = number of particles (moles)

R = universal gas constant (0.0821)

T = temperature (Kelvin)

P = pressure (atm)

(Assuming you have 1 mole of Helium in a chemical reaction) We would need to convert grams to moles: 12.0g He x 1 mol He/4 molar mass of He = 3 mol He

Convert Celsius to Kelvin: 100*C + 273.15 = 373.15 K

Now we can set up the equation for volume: (3mol)(0.0821)(373.15)/1.2atm = 76.6 L of Helium gas

8 0
3 years ago
At a temperature of 393 K, the pressure of a sample of nitrogen is 1.07 atm. What will the pressure be at a temperature of 478 K
Rainbow [258]

Answer:

1.30atm

Explanation:

P1/T1 = P2/T2

1.07/393 = P2/478

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3 years ago
Plz answer this fast... will mark ur answer as brainliest
Xelga [282]

Answer:

When fuels are incompletely burnt, they release carbon monoxide gas into the atmosphere. This gas is very dangerous as it is poisonous in nature

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7 0
2 years ago
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After 1911, most scientists accepted the theory that the nucleus of an atom was very dense and very small and had a positive cha
Scorpion4ik [409]

Answer:

I believe it is D

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We can change a gas to liquid by_________ the temperature and_________
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