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shutvik [7]
2 years ago
7

Is energy needed to break the bond? Cl2 ---->2Cl-​

Chemistry
1 answer:
Alecsey [184]2 years ago
4 0
Isn’t it that you need UV or something?
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When 40.5 g of Al and 212.7 g of Cl2 combine in the reaction:
slamgirl [31]

Answer:

1.5 mole

Explanation:

Step 1:

The balanced equation for the reaction. This is illustrated below:

2Al(s) + 3Cl2(g) --> 2AlCl3(s)

Step 2:

Determination of the masses of Al and Cl2 that reacted from the balanced equation. This is illustrated below:

Molar Mass of Al = 27g/mol

Mass of Al from the balanced equation = 2 x 27 = 54g

Molar Mass of Cl2 = 2 x 35.5 = 71g/mol

Mass of Cl2 from the balanced equation = 3 x 71 = 213g

From the balanced equation,

54g of Al reacted.

213g of Cl2 reacted

Step 3:

Determination of the limiting reactant.

This is illustrated below:

From the balanced equation above,

54g of Al reacted with 213g of Cl2.

Therefore, 40.5g of Al will react with = (40.5 x 213)/54 = 159.75g of Cl2.

From the calculations made above, there are leftover of Cl2 as 159.75g reacted out of 212.7g. Therefore, Cl2 is the excess reactant and Al is the limiting reactant.

Step 4:

Determination of the number of mole in 40.5g of Al. This is illustrated below:

Molar Mass of Al = 27g/mol

Mass of Al = 40.5g

Number of mole of Al =?

Number of mole = Mass/Molar Mass

Number of mole of Al = 40.5/27

Number of mole of Al = 1.5 mole

Step 5:

Determination of the number of mole of AlCl3 produced When 40.5 g of Al and 212.7 g of Cl2 combine together. This is illustrated below:

2Al(s) + 3Cl2(g) --> 2AlCl3(s)

From the balanced equation above,

2 moles of Al produced 2 moles of AlCl3.

Therefore, 1.5 mole of Al will also produce 1.5 mole of AlCl3.

From the calculations made above, 1.5 mole of AlCl3 is produced When 40.5 g of Al and 212.7 g of Cl2 combine together.

8 0
3 years ago
Read 2 more answers
Which of the following describes a chemical change?
Sphinxa [80]

Answer:

C

Explanation:

Have a nice day

6 0
3 years ago
What is the structural formula of pentyl alcohol?
Tema [17]
C5H120<hope this helps
7 0
3 years ago
If 22.6 grams of an aqueous solution of zinc nitrate, Zn(NO3)2, contains 5.08 grams of zinc nitrate, what is the percentage by m
sesenic [268]

Answer:

22.5%

Explanation:

To find percentage by mass, you divide the mass of the solute by the mass of the solvent.

5.08 g/22.6 g = 0.2248 = 22.5%

5 0
3 years ago
Irons use electrical energy to make steam. In this example, which type of energy has the electrical energy been transformed into
elena55 [62]

Answer:

Heat

Explanation:

In the iron where electric current is used to heat water, electrical energy is converted to heat energy which is boils the water to steam.

 Electrical energy is due to the movement of current within a circuit. The heat produced by the electrical energy is transferred to the water.

This in turn forms steam which is used for the ironing processes.

Heat energy is generated when the average kinetic energy of the molecules in a system increase.

8 0
2 years ago
Read 2 more answers
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