Can same element have different mass? if yes or No.

1 answer:

8 0

Isotopes are the same elements, with the same number of protons but different number of neutrons, which due to the rule of definition of Atomic mass, A = p + n, if we increase or decrease n, which is the number of neutrons, we will have a different mass even though we are still talking about the same element, therefore the answer is YES

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Answer : The concentration of copper(II) fluoride in the solution is, $6.4\times 10^{-8}mole/L$

Explanation : Given,

Moles of copper(II) fluoride = 0.032 μ

mol = $0.032\times 10^{-6}mol=3.2\times 10^{-8}mol$

conversion used : $\mu mol=10^{-6}mol$

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Formula used :

$\text{Molarity}=\frac{\text{Moles of copper(II) fluoride}\times 1000}{\text{Volume of solution (in mL)}}$

Now put all the given values in this formula, we get:

$\text{Molarity}=\frac{3.2\times 10^{-8}mol\times 1000}{500mL}=6.4\times 10^{-8}mole/L$

Therefore, the concentration of copper(II) fluoride in the solution is, $6.4\times 10^{-8}mole/L$

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