How many grams are there in 0.250 moles of sodium hydroxide

The mass of sodium hydroxide is 10 grams.

Explanation:

To calculate the mass of a substance, we use the equation to calculate the number of moles, we get:

We are given:

Moles of sodium hydroxide = 0.25 mol

Molar mass of sodium hydroxide = 40 g/mol

Putting values in above equation, we get:

Hence, the mass of sodium hydroxide is 10 grams.

that tool would be a compass

answer:

the answer is 6 valence electrons.

explanation:

valence is the # of electrons on the outer most shell of an atom.

oxygen has 6.

although, the valency of oxygen is 2, because it only needs to make 2 covalent bonds, or gain 2 electrons, to achieve the stable octet configuration of a noble gas.

that's it!

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