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tangare [24]
3 years ago
9

6th grade science. Help me please !! :))

Chemistry
1 answer:
Airida [17]3 years ago
5 0

Answer:

C

Explanation:

i think he enjoyed the drums because it said he played in different bands

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A 25-liter sample of steam at 100°c and 1.0 atm is cooled to 25°c and expanded until the pressure is 19.71 mmhg. if no water con
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I will use [pV/T] in the state 1 = [pV/T] in the state 2.

State 1:
p = 1.0 atm
V = 25 liter
T = 100 + 273.15 = 373.15 K

State 2:

p = 19.71 mmHg * 1.atm / 760 mmHg = 0.0259atm
V= ?
T = 25 + 273.15 = 298.15 K

Application of the formula

1.0 atm * 25 liter / 373.15 k = 0.0259 atm * V / 298.15 K =>
V = [1.0atm * 25 liter / 373.15 K]*298.15K/0.0259atm = 771 liter

 
8 0
3 years ago
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Calculate the molar mass of CH4 gas at STP when 5.46Lof the gas weighs 4g??​
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Answer:

About 16.42 grams

Explanation:

PV=nRT \\\\(1)(5.46L)=n(0.0821)(273) \\\\n\approx 0.2436 \\\\4g/0.2436\approx 16.42

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6 0
3 years ago
When sugar glucose, C6H12O6, is burned with air, carbon dioxide and water vapor are produced. Write the balanced equation and ca
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What are household items that are made up from carbon?
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What phenomenon in nature do scientists use to define the length of a meter? Why is this a better definition than “the length of
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Answer:

The natural phenomenon used to describe the length of a meter is the speed of light. The length of a meter is the length a light path travels in 1/(299792458) seconds through a vacuum.

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Explanation:

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