CHEMISTRY MIDDLE SCHOOL

How many moles of chlorine are in 300 liters of chlorine

Answers

Answer 1

Answer:

Answer:

13.39 mol ≅ 13.4 mol.

Explanation:

It is known that 1.0 mole of any gas occupies 22.4 L at STP conditions.

Using cross multiplication:

1.0 mole of Cl₂ occupies → 22.4 L.

??? mole of Cl₂ occupies → 300.0 L.

∴ The no. of moles of Cl₂ are in 300 liters = (1.0 mol)(300.0 L)/(22.4 L) = 13.39 mol ≅ 13.4 mol.

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Why is the chlorine that is added to final,treated waste water allowed to get used up
before it is discharged into a river or lake?

Answers

Chlorine is used as a disinfectant to wastewater treatment plants. The addition of chlorine to the final treated water is because to make sure that some of the microorganisms not killed during treatment is eliminated. It is consumed before it is released to the environment to ensure that microorganisms and other marine life are not killed in the process too.

Which of the following is an example of anaerobic respiration? Plant roots respiring in soil
Respiring while swimming underwater
Oxygen diffusing into a plant cell through stomata
Breaking down of glucose with oxygen inside an animal cell

Answers

your answer is D have a good day

Answer:

Explanation:

think about it its d i did the test and the answer was right!

What is the charactics of igneous

Answers

Igneous rocks are formed in the magma chamber
There are always crystals* in these rocks
There are no fossils
There are Grains in these rocks
There is no sign of stratification in these rocks
Igneous rocks does not react with acids.

*The size of the crystals depend on the speed of crystalization
Slow crystalization would result in large crystals and vice versa for slow crystalization.
Hope it helps :D

What is zinc+silver nitrate

Answers

$Zn(s)+2AgNO_3(aq) \rightarrow Zn(NO_3)_2(aq)+2Ag(s)$

i think it is: ZnAgN or Zn(Zinc) + Ag(Silver)N(Nitrogen)

What takes place among elements to form an ionic bond? A.
One or more electrons are transferred.

B.
One or more electron shells are shared.

C.
One or more electrons are shared.

D.
One or more electron shells are transferred.

Answers

I'm gonna go with A.One or more electrons are transferred.
Hope i helped :)

Which of the following descriptionsbest describes a solid substance?
A. The volume of the substance depends on the
container it is in.
B. Volume of the substance changes depending on its
location.
C. The shape of the substance changes often.
D. The shape of the substance is fixed and volume is
constant.

Answers

Answer:

Explanation:

depending on the solid the shape will not change.

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