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Yuliya22 [10]
3 years ago
14

3 points

Chemistry
1 answer:
vfiekz [6]3 years ago
8 0

Answer:

density=6.74g/ml

:320g÷47.5ml

d=6.74g/ml

thank you

<em><u>I </u></em><em><u>hope</u></em><em><u> </u></em><em><u>this </u></em><em><u>is </u></em><em><u>helpful</u></em>

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Question 25———-A, YA are two isotopes of element A.
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Answer:

Option C. 1

Explanation:

Step 1:

Determination of the Neutron of both isotopes. This is illustrated below.

For isotope y xA:

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Mass number = Proton + Neutron

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For isotope (y + 1) xA:

Mass number = y + 1

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Rearrange

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Step 2:

Determination of the difference between the neutron number of both isotopes. This is illustrated below:

For isotope y xA:

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For isotope (y + 1) xA:

Neutron number = y + 1 – x

Difference in neutron number

=> (y + 1 – x) – (y – x)

=> y + 1 – x – y + x

Rearrange

=> y – y + 1 – x + x

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3 years ago
Which list of elements from Group 2 on the Periodic Table is arranged in order of increasing atomic radius?
IgorC [24]
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Answer:

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Or

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