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kap26 [50]
3 years ago
12

WILL GIVE OUT BRAINLY

Chemistry
1 answer:
Margarita [4]3 years ago
4 0

Answer:

3. An oxygen atom with 8 electrons, 8 protons, and 9 neutrons .

Explanation:

if an atom contains equal numbers of protons and electrons, the atom is described as being neutral.

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Calculate the molarity of a solution that contains 3.11 mol of NaNO3 dissolved in 2.50 L. Enter your answer in the provided box.
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Answer:

Molarity of a solution that contains 3.11 mol of NaNO3 is 1,24 M

Explanation:

We understand molarity as the number of moles of solute that are contained in 1 L of solution, then if in a solution of 2.50 L we have 3.11 moles, it remains to calculate how many moles do we have in 1 liter.

2,50 L .......... 3,11 moles

1 L .................. x

X = ( 1 L x 3,11 moles) / 2,50 L = 1,24

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