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Tju [1.3M]
3 years ago
15

A gas stp is 4.38 L how many moles are there ?

Chemistry
1 answer:
kaheart [24]3 years ago
8 0

Answer:

There are 0.195 moles.

Explanation:

1 mol of <em>any gas </em>under STP (meaning 1 atm and 273 K) will occupy 22.4 liters.

With the information above in mind, we can <u>calculate how many moles will occupy 4.38 liters</u>:

  • 4.38 L * 1 mol / 22.4 L = 0.195 mol

In 4.38 liters of a gas at STP there will be 0.195 moles.

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Explanation:

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2 years ago
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Min : sec helium and nickel are classified as _____, which are pure substances that make up all kinds of matter
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Helium which has a chemical formula of He is considered as a noble gas while Nickel which has a chemical formula of Ni is considered as metallic. Although both have different phases but they are both classified under the general category of “Elements”.

 

answer:

<span>elements</span>

4 0
3 years ago
A gas at constant temperature has a pressure of 404.6 kPa with a volume of 12 ml. If the volume changes to 43ml, what is the new
blagie [28]

Answer:

The answer is

<h2>112.912 kPa</h2>

Explanation:

The new pressure can be found by using the formula for Boyle's law which is

P_1V_1 = P_2V_2

Since we are finding the new pressure

P_2 =  \frac{P_1V_1}{V_2}  \\

404.6 kPa = 404600 Pa

From the question we have

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We have the final answer as

<h3>112.912 kPa</h3>

Hope this helps you

4 0
3 years ago
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<span>Fe(NO3)2
The NO3 part is a poly-atomic ion with total charge -1.
This is because Fe has a +2 charge and two NO3's with a -1 charge will balance out to 0.
 Most often we just make the assumption that Oxygen has a -2 oxidation number because it is very electro-negative.
So to find N, we just need an oxidation number that balances out with 3(-2) to get -1 (the total charge of the ion)</span>
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C

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6 0
3 years ago
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