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4 years ago

What mass of cl2 is required for the complete reaction

Chemistry

1 answer:

Alchen [17]4 years ago

7 0

My teacher had given us this map to solve these types of problems. Start with 10 g of iron, use the molar mass of iron, mole ratio to the next chemical ( in this case Cl2) and then use the molar mass of Cl2.
Hope this helps!

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Which of the following measurements contains two significant figures? A. 0.0004 00 L B. 0.0004 04 L C. 0.0000 44 L D. 0.0004 40

Feliz [49]

The answer is C. If the Fours were all the way on the left it would make all of the zeros Significant figures.

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3 years ago

Read 2 more answers

Solid potassium chlorate decomposes into solid potassium chloride and oxygen gas. If 2.00 g potassium chlorate decomposes in a c

abruzzese [7]

Answer : The final chamber pressure is 0.746 atm.

Explanation:

First we have to calculate the moles of $KClO_3$ .

Molar mass of $KClO_3$ = 122.5 g/mole

$\text{ Moles of }KClO_3=\frac{\text{ Mass of }KClO_3}{\text{ Molar mass of }KClO_3}=\frac{2.00g}{122.5g/mole}=0.0163moles$

Now we have to calculate the moles of $O_2$ .

The balanced chemical reaction will be:

$2KClO_3\rightarrow 2KCl+3O_2$

From the balanced reaction we conclude that,

As, 2 moles of $KClO_3$ react to give 3 moles of $O_2$

So, 0.0163 moles of $KClO_3$ react to give $\frac{3}{2}\times 0.0163=0.0244$ moles of $O_2$

Now we have to calculate the pressure of gas.

Using ideal gas equation:

$PV=nRT$

where,

P = pressure of gas = ?

V = volume of gas = 0.800 L

T = temperature of gas = $25.0^oC=273+25.0=298K$

R = gas constant = 0.0821 L.atm/mole.K

n = number of moles of gas = 0.0244 mole

Now put all the given values in the ideal gas equation, we get:

$P\times (0.800L)=0.0244mole\times (0.0821L.atm/mole.K)\times (298K)$

$P=0.746atm$

Therefore, the final chamber pressure is 0.746 atm.

3 0

4 years ago

Question 4 (1 point)

bagirrra123 [75]

Answer:

Argon

Explanation:

The element that would most likely be a good substitute for neon is "argon".

These two elements belong to the noble gases in Group 18(8A) of the Periodic Table. They are inert gases - they do not react chemically with other substances.

Argon, as an inert gas is often used whenever an inert atmosphere is needed. Argon is used in incandescent light bulbs. It is used to stop oxygen from corroding the filament. It is also used by welders to protect weld area.

Argon is a good substitute for neon in this context because they possess some physical properties which are similar.

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3 years ago

Draw the two major products obtained when 3,3,6-trimethylcyclohexene is treated with NBS and irradiated with UV light.

svetoff [14.1K]

Answer:

Attached is the diagram

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3 years ago

Give three examples of environmental, industrial and bio-chemistry.

JulsSmile [24]

Three examples of environmental, industrial and bio-chemistry are listed below:

Environmental chemistry: Contamination, Atmospheric Deposition, and Soil Pollution.
industrial chemistry: industrial inorganic chemicals, industrial organic chemicals, and agricultural chemicals
bio-chemistry: genetic, immunology, and enzymology

<h3>Meaning of Chemistry</h3>

Chemistry can be defined as a branch of science which is concerned with the substances matter is composed of, their properties and reactions,

Chemistry also deals with the use of such reactions to form new substances.

In conclusion, Three examples of environmental, industrial and bio-chemistry are listed anove

Learn more about chemistry: brainly.com/question/24419453

#SPJ1

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2 years ago