3 years ago

A drought is a long period of dryness. If animals fight during a drought, which basic need is most likely limited?

Chemistry

2 answers:

gregori [183]3 years ago

6 0

I think it a water supply

IrinaK [193]3 years ago

4 0

A, water supply sjdnjxnxjsnd

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In a certain compound of iron and oxygen, FexOy, it is found that a sample of this compound weighing 6.285 g contains 4.396 g of

saveliy_v [14]

Answer:

Formula of oxide is $Fe_{2}O_{3}$

Explanation:

The given compound consists of Fe and O.

So, mass of oxygen in sample = (mass of sample) - (mass of Fe in sample)

= (6.285 g ) - (4.396 g)

= 1.889 g

Molar mass of O = 16 g/mol and molar mass of Fe = 55.845 g/mol

So, ratio of number of moles of Fe and O (Fe : O)

= $\frac{4.396}{55.845}:\frac{1.889}{16}$

= 0.0787 : 0.118

= $1:\frac{0.118}{0.0787}$

= 1 : 1.5

= 2 : 3

So, formula of oxide is $Fe_{2}O_{3}$

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3 years ago

What is the answer for chemestry when it says 1.204 times 10^24

Sphinxa [80]

Answer: This is called moles

Explanation: This is described to be the number of molecules, atoms or ions in a substance :)

6 0

3 years ago

Please help me with this one. I think it’s right but can someone double check it.

devlian [24]

I think so because I did this before

6 0

3 years ago

When you mix calcium hydroxide base with hydrochloric acid. What salt is produced?

chubhunter [2.5K]

Calcium chloride is produced

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3 years ago

How many molecules are in 4.5 moles of H2O?

Evgen [1.6K]

Answer:

There would be around 2.7*10^24 molecules.

Explanation:

You have to multiply the amount of moles by Avogadro's number to get amount of molecules.

6 0

3 years ago