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FromTheMoon [43]
3 years ago
15

If there's a jar that contains helium gas . What would happen if the lid of the jar was removed ?

Chemistry
1 answer:
Sergio039 [100]3 years ago
6 0
The helium would float away because it's lighter than air.
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Soil texture is based on?
blsea [12.9K]
It is based on the water underground
3 0
3 years ago
PLEASE HELP ASAP!!!<br> What is the mass of the element above?<br> -1<br> -2<br> -3<br> -4<br> -5
makkiz [27]

Answer:

its 1 not negative

the atom shown below was hydrogen, known as H.

4 0
3 years ago
A gas evolved during the fermentation of alcohol had a volume of 19.4 L at 17 °C and 746 mmHg. How many moles of gas were collec
AlexFokin [52]

Answer:- 0.800 moles of the gas were collected.

Solution:- Volume, temperature and pressure is given for the gas and asks to calculate the moles of the gas.

It is an ideal gas law based problem. Ideal gas law equation is used to solve this. The equation is:

PV=nRT

Since it asks to calculate the moles that is n, so let's rearrange this for n:

n=\frac{PV}{RT}

V = 19.4 L

T = 17 + 273 = 290 K

P = 746 mmHg

we need to convert the pressure from mmHg to atm and for this we divide by 760 since, 1 atm = 760 mmHg

P=746mmHg(\frac{1atm}{760mmHg})

P = 0.982 atm

R = 0.0821\frac{atm.L}{mol.K}

Let's plug in the values in the equation to get the moles.

n=\frac{0.982atm*19.4L}{0.0821\frac{atm.L}{mol.K}*290K}

n = 0.800 moles

So, 0.800 moles of the gas were collected.

4 0
3 years ago
Column A. (4pts/.5 pts each) Order the layers from youngest to oldest. Write the letter for each layer in the correct order in t
vladimir1956 [14]

Answer:

principle of superposition

8 0
2 years ago
A scientist has a container with a substance inside. At first, the molecules in the substance move away from each other. Later,
ArbitrLikvidat [17]
The answers here is B) Before, the substance was a gas, later it was a liquid.

Gas particles move freely and away from each other. However, liquid particles move around each other.

Hope this helps! :)(
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3 years ago
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