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omeli [17]
3 years ago
7

4.0 L sample of methane gas is collected at 30.0c, what is the volume of the sample at -8c?

Chemistry
1 answer:
Vedmedyk [2.9K]3 years ago
8 0
This particular law is a gas law, called Charle's Law. The formula is:

V1    V2
---- = ----
T1     T2

So we know our original volume is 4.0L, so we would plug that into our V1. We know T1 is the 30 degrees, since it relates to our original volume. However, we need to convert it to kelvin. We do this simply by adding 273 degrees to the 30 degrees, since 273 is the constant for kelvin.

We do not know our second volume, however we know out T2. It is -8 degrees, and don't forget to convert it to Kelvin. 

So, when we plug all of these numbers into the equation, we are left with V2 to find. To do this we cross multiply (V1 x T2) and then divide by T1. That leaves us with the number for V2. Don't forget to round to the least # of sig figs! And you can divide V1 by T1, and then divide V2 by T2, to ensure your answers are the same, since they are directly porportional and need to be equal to each other. 

Hope I could help!
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Answer:

Group 7A

Explanation:

The group 7A elements consists of the most reactive non-metals on the periodic table.

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3 0
3 years ago
What is Br mass number?
Fofino [41]

Name Bromine

Symbol Br

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Number of Protons 35

Number of Neutrons 45

Number of Electrons 35

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Boiling Point 58.78° C

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3 0
3 years ago
A test tube filled with water is placed over a funnel filled with water and a green plant called Elodea. When the plant is expos
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Answer: The bubbles produced are most likely due to oxygen.

Explanation:

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The balanced chemical reaction for photosynthesis is:

6CO_2+6H_2O\rightarrow C_6H_{12}O_6+6O_2

Thus the bubbles produced are most likely due to oxygen.

5 0
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If a solution containing
tankabanditka [31]

Answer:

Hg(NO₃)₂(aq) + Na₂SO₄(aq)   →   2NaNO₃(aq) + HgSO₄(s)

Moles of Hg(NO₃)₂ = 55.42 / 324.7 ==> 0.1707 moles

Moles of Na₂SO₄ = 16.642 / 142.04 ==> 0.1172 moles

Limiting reagent is Na₂SO₄ as it controls product formation

Moles of HgSO₄ formed = 0.1172 moles

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                                        = 34.757g

Explanation:

6 0
3 years ago
Which of the following are directly proportional? *
Ivanshal [37]
Volume and temperature.
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2 years ago
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