3 years ago

Calcium carbonate () is 34.5% Ca by mass. In a 418 g sample of , how many grams of calcium are present?

Chemistry

1 answer:

erastovalidia [21]3 years ago

8 0

Answer:

144.2 g of Ca are present in 418 g of sample

Explanation:

34.5 % Ca → In 100 g of salt there are 34.5 g of Ca

Let's make a rule of three:

In 100 g of salt there are 34.5 g of Ca

In 418 g of salt there must be (418 . 34.5) / 100 = 144.2 g

You might be interested in

Decide whether the property measured was a chemical or physical property of X, if you can. If you don’t have enough information

olga nikolaevna [1]

Answer:

<u><em>See attachment for explanations.</em></u>

Explanation:

3 0

2 years ago

What type of ion does the substance give off if it turns the pH paper blue?

olga_2 [115]

Answer:

Alkaline

Explanation:

In an alkaline solution, red litmus paper turns blue. When an alkaline compound dissolves in water, it produces hydroxide ions, which cause the solution to become alkaline.

5 0

3 years ago

Read 2 more answers

The octet rule states that atoms will gain, lose, or share valence electrons to get a full outer shell (orbital). Explain in you

bezimeni [28]

Answer:

In covalent bonding, the octet rule is important because sharing electrons gives both atoms a full valence shell. As a result, each atom can consider the shared electrons to be part of its own valence shell.

np :)

6 0

3 years ago

Read 2 more answers

Predict the product for this reaction.

harina [27]

Answer:

The answer is = LiCl ..............

4 0

2 years ago

When shopping for major appliances, people should look for high energy-rating numbers because those items _____.

madam [21]