[citrus137]

Hi, so the question reads: "1. A Sodium fluoride toothpaste contains 1450 ppm of fluoride ions. Knowing that the molecular weight of NaF is 41.99 g/mol and the atomic mass of F- is 18.99 g/mol, calculate how much NaF is need to prepare 30g of the toothpaste?"

Any help on how to approach such a question as I am seriously stumped on how to even begin to approach this?

Thanks for the *delete me*

[AWK]

Do you know a definition of ppm concentration?

[citrus137]

Do you know a definition of ppm concentration?

Different places report ppm to be different things, but I'm assuming in this question it is referring to 1450 g per 1,000,000g?

[AWK]

Then calculate mass of 1450 g F^- to grams of KF and scale down to 30 g.