What is the recommended daily dosage of flouride

Ответ:

xjsg

14.01.2022

What is the recommended daily dosage of flouride for a child over three years of age living in an area where drinking water is free fluoridechild:

3-6: 0.5mg

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Ответ:

abby1919

17.06.2020

Physics

$\boxed {\boxed {\sf d= 5 \ g/cm^3}}$

Explanation:

Density can be found by dividing the mass by the volume.

$d=\frac{m}{v}$

The mass of the quartz is 30 grams and the volume is 6 cubic centimeters.

$m=30 \ g \\v= 6 \ cm^3$

Substitute the values into the formula.

$d=\frac{30 \ g}{6 \ cm^3}$

Divide.

$d= 5 \ g/cm^3$

The density of this piece of quartz is 5 grams per cubic centimeter.

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What is the recommended daily dosage of flouride for a child over three years of age living in an area where drinking water is free fluoride

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