4 years ago

Which of these describes a wave being reflected?

Chemistry

1 answer:

meriva4 years ago

3 0

Answer:

please don't waste people's time.

Explanation: I'd be glad to answer any question with proper details this one is unanswerable.

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Seven moles of Argon gas are at a presseure of 2.90 atm, and the temperature is 50c . What is the volume of the gas?

ra1l [238]

At s.t.p, the volume of a gas =22.4dm³
Talking the problem,
At 1atm, 273K the volume =7 moles *22.4dm³/mol
At 323K, 2.90atm, volume =?
The combined gas equation
P1v1/T1=P2v2/T2
P1=1atm
P2=2.9atm
T1=273K
T2=323K
V1=156.8dm³
Therefore,
1*156.8dm³/273=2.9atm*V2/323
V2=(156.8dm³*323K)/(273K*2.9atm)
= 64dm³

3 0

4 years ago

If you were about 10 kilometers above earth, what would the pressure approximately be?

Sliva [168]

Answer:

About 25 kPa

Explanation:

Pressure decreases with height above sea level.

The calculation is rather complicated, so I will refer to the figure below.

It shows that the pressure at 10 km is about 25 kPa.