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maria [59]
2 years ago
10

Consider an electrochemical decomposition apparatus comprised of a strontium chloride cell, a berylium chloride cell, and a bari

um chloride cell (you should be able deduce the formulae for these compounds). If sufficient charge is passed through the circuit to produce 20 g of strontium in the molten strontium chloride cell, what quantity of berylium is expected in the berylium chloride cell
Chemistry
1 answer:
ikadub [295]2 years ago
6 0

Answer:

Explanation:

Atomic weight of strontium ( Sr ) is 88 .

Atomic weight of Beryllium ( Be) is 9 .

Both are bivalent .

2 x 96500 coulomb is required to decompose 88 g of Sr .

88 g of Sr requires 2 x 96500 coulomb of charge

20 g of Sr will require   2 x 96500 x 20 / 88 coulomb of charge

coulomb of charge required = 43863.63 coulomb .

9 g of Be requires 2 x 96500 coulomb of charge

2 x 96500 coulomb of charge gives  9 g of Be

43863.63 coulomb .of charge gives 9 x 43863.63 / (2 x 96500 ) g of Be

= 2.04 g.

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Suppose your bedroom is 21 ft long, 17 ft wide, and the distance from floor to ceiling is 7 ft, 6 in. You need to know the volum
umka21 [38]

Answer:

1. 75.82 m^3 (cubic meters)

2. 75820 L (Liters)

Explanation:

Given data

L = 21 FT

W = 17 ft

h = 7 ft 6 in

Calculation

Formula to calculate volume is:

     V= L×W×h

put the values in formula

      V = 21 ft × 17 ft × 7 ft 6 in

       V = 2677.5 ft

Now we will convert Cubic ft to cubic meters, as we know that 1 cubic meter is equal to 35.3147 cubic feet

      V (m^3) = 2677.5  ÷ 35.3147

      V (m^3) = 75.82 m^3

Now we will calculate liters

as we know that 1 cubic meter is equal to 1000 liters

so multiply the ans. with 1000

    L = 75.82 × 1000

    L = 75820 l

4 0
3 years ago
What is the pH of the solution if the [H+] is 1 x 10-12 ?
jarptica [38.1K]

Answer:

<h2>12</h2>

Explanation:

The pH of a solution can be found by using the formula

pH = - log [ {H}^{+} ]

From the question we have

pH =  -  log(1 \times  {10}^{ - 12} )  \\

We have the final answer as

<h3>12</h3>

Hope this helps you

5 0
3 years ago
You use 50.00 mL of a 12.0 M solution of HCl solution to make a 500.00 mL solution. What is the concentration of the new solutio
Alexandra [31]

Answer:

1.2 M

Explanation:

If you use the dilution equation (M1V1=M2V2), you end up with (50)(12)=(500)(M2), and when you solve for M2 you get 1.2 M.

6 0
3 years ago
Someone please help me, i really need help!
barxatty [35]

Answer:

2 Moles

Explanation:

12 grams of carbon contains 1 mole

1 gram contains [1 mole/ 12 grams ] x 1 gram

24 grams contains [1 mole/ 12 grams ]* 24 gram = 2 moles.

5 0
3 years ago
the volume of a gas with a pressure of 1.2 atmospheres increases from 1 to 4 what is the final pressure of the gas assuming cons
Oksana_A [137]

Answer:

the answer is is putting ptessure on the gas

Explanation:

7 0
3 years ago
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