If an oxygen isotope has 8 protons and 10 neutrons in its nucleus, what is its atomic mass?

Chemistry

2 answers:

larisa [96]2 years ago

5 0

I would probably say 18

Galina-37 [17]2 years ago

4 0

Atomic mass = number of protons + number of neutrons
= 10 + 8 = 18

In short, Your Answer would be Option C

Hope this helps!

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5. 16.3 g of NaCl is dissolved in water to make 1.75 L of solution. What is the molarity of this solution? A 0.159 M B 0.278 M C

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Number of moles is defined as the mass of substance divided by its molar mass.

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$Moles = \frac{mass}{molar mass}\\= \frac{16.3 g}{58.44 g/mol}\\= 0.278 mol$