How many moles are there in 23.4g naoh?

2.34 M

Explanation:

The molecular weight of sodium hydroxide is 39.997 g/mol.That is, 1 mole weights 39.997 g

You have

23.4 g so you have

23.4g /39.997 g/mol=0.585 moles

These 0.585 moles are present in 250 ml and 250 ml is equivalent to 0.25 liters.

Molarity is moles per liter.

molarity=moles/litre

molarity=0.585 moles/0.25 L

molarity =2.34 M

it's c. elements are placed in rows based on how may valencies electrons have.

answer by yourhope:

how do models compare to real-world objects?

d. most models represent a real-world object in a simpler way.

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