3 years ago

How many molecules are there in 21.4 grams of Ca(OH)2?

Chemistry

1 answer:

nata0808 [166]3 years ago

4 0

The answer would be 0.288827452320528

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Personal eyeglasses provide as much protection as Group of answer choices splash proof chemical goggles a face shield safety gla

MArishka [77]

Answer:

none of the above

Explanation:

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3 years ago

Would you expect an atom to have a charge?

puteri [66]

Answer:

An atom consists of a positively charged nucleus, surrounded by one or more negatively charged particles called electrons. The positive charges equal the negative charges, so the atom has no overall charge; it is electrically neutral.

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1 year ago

PLSSS HELP MEE 100 POINTS!!!!!!! How many atoms of each element does magnesium hydroxide, Mg(OH)2, contain? Magnesium = 1 atom,

Basile [38]

It would be Magnesium = 1 atom, Oxygen = 2 atoms, Hydrogen = 2 atoms. It has 5 atoms total. There is 1 magnesium and you multiply each element by the the 2 outside the parenthesis to get 2 oxygen and 2 hydrogen.

5 0

3 years ago

Read 2 more answers

Help me with this please

myrzilka [38]

Explanation:

I can't guess it properly

8 0

3 years ago

Ira Lisetskai [31]

Answer:

$410mg/day *\frac{1000 ug}{1 mg}$

Recommended daily Amount (RDA) of magnesium is 410,000 μg/day.

Explanation:

There are 1000μg in 1 mg and 1000 mg in 1g

1 mg=1000μg

The Recommended daily Amount (RDA) is 410 mg/day of magnesium. Converting 410 mg/day into μg/day

$410mg/day *\frac{1000 ug}{1 mg}$

It will become 410,000 μg/day

So Recommended daily Amount (RDA) of magnesium is 410,000 μg/day.

4 0

3 years ago