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1 year ago

10

How many electrons, protons and neutrons does the element Argon have?

1 answer:

erik [133]1 year ago

8 0

Answer:

18 Protons

18 Neutrons

&

18 Electrons

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How many moles of nitric acid are present in 35.0 ml of a 2.20 M solution?

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There are 77 millimoles of nitric acid present in 35.0 mL of a 2.20 M solution

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Molarity of the solution = 2.20 M

$Molarity=\frac{number\:of\:moles}{Volume\:of\:Solution\:in\:L}\\\\Number\:of\:moles=Molarity\times(Volume\:of\:Solution\:in\:L)\\\\Volume\:of\:Solution=35\:mL=35\times10^{-3}L\\\\Number\:of\:moles=2.20\times35\times10^{-3}=77\times10^{-3}\:moles\:of\:HNO_{3}$

Therefore, there are 77 millimoles of nitric acid present in 35.0 mL of a 2.20 M solution

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