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Evgen [1.6K]
3 years ago
5

Suggest 2 reasons why the noble gases become less ideal in their behaviour down the group from helium to xenon.

Chemistry
1 answer:
Elenna [48]3 years ago
4 0
Reason1: electrons on farther layers become free easyer
2nd reason: volume of atoms grows (from Helium to Xeon) so instead  of boyle-mariot law equation (PV=vRT) is  more accurate to use van der walls equations that adds to the boyle-mariot equation the volume occupied by the atoms of the gas to the volume of the space between the atoms P(Vm-b)=vRT
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3 0
3 years ago
4. How many moles of KBr are found in 3 Liters of 0.4 M solution?
Allisa [31]

There are 1.2 moles of KBr found in 3 Liters of 0.4 M solution.

<h3>HOW TO CALCULATE NUMBER OF MOLES?</h3>

The number of moles of a substance can be calculated by multiplying the molarity by the volume.

No. of moles = Molarity × volume

According to this question, 3L of a KBr solution are contained in a 0.4M.

no. of moles = 3L × 0.4M = 1.2moles

Therefore, there are 1.2 moles of KBr found in 3 Liters of 0.4 M solution.

Learn more about no. of moles at: brainly.com/question/14919968

4 0
3 years ago
Which of the following statements is true about an endergonic reaction? ∆G is positive ∆G is negative ∆S is negative
Mazyrski [523]
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scZoUnD [109]
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6 0
3 years ago
A chemist performs the same tests on two white solids, A and B. The results are shown in the table below.
Roman55 [17]

Answer:

i'm not sure but mabey A?

Explanation:

4 0
3 years ago
Read 2 more answers
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