How many moles is 0.025 g of NaCO3?

Help please, I'm stuck :(

Moles are the unit used for defining an atom or molecule present in a substance. It is represented by mol.

3.012 x 10⁻⁴ mol of are present.

Moles are the quantity present in a mass of a substance proportionate to the molar mass of the substance.

Given,

Inserting values:

Therefore, 3.012 x 10⁻⁴ mol of is present.

Learn more about moles here:

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Explanation:

How many moles?

moles=Mass/Molar Mass

Here we have the mass and we can get the molar mass from the periodic table (Na=23, C=12, O=16) So

Molar mass= 23+12+(16x3)=83

Then Moles=0.025/83=1/3320

Hope it helps

you will be stuck but you should practice more even you will be interested in solving.

Dont be worry ;)

the answer is 0.42 is that is an option. this question provides no info