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Helga [31]
2 years ago
6

Me and my sister needs help on this question PLEASE HELP! (Look at photo)

Chemistry
2 answers:
zloy xaker [14]2 years ago
7 0
It’s B because the plate that’s more dense is always on the bottom.
irakobra [83]2 years ago
5 0
B it’s the second one
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A lightbulb filled with argon gas has a volume of 75 mL at STP. How many moles of argon gas does the lightbulb contain?
Elan Coil [88]

Answer:

0.00335 moles

Explanation:

From the question, Using

PV = nRT................... Equation 1

Where P = pressure, V = Volume, n = number of moles of argon gas, R = Molar  gas constant, T = Temperature.

make n the subject of the equation

n = PV/RT............... Equation 2

Given: P = 1 atm (standard pressure), T = 273 K (standard temperature), V = 75 mL = 0.075 dm³

Constant: R = 0.082 atm·dm³/K·mol

Substitute into equation 2

n = (1×0.075)/(273×0.082)

n = 0.075/22.386

n = 0.00335 moles

4 0
2 years ago
PLEASE ASNWR ASAP
Vikki [24]
34.95 atm

lol i hope i’m not too late



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Answer:

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Explanation:

hope this helps have a good day

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2 years ago
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