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GenaCL600 [577]
2 years ago
14

The third ionization energy of bromine is the energy required for which of the following processes?

Chemistry
1 answer:
Rzqust [24]2 years ago
3 0

Answer:

<u><em /></u>

  • <u><em>Br²⁺ (g)  → Br³⁺ (g) + e⁻</em></u>

Explanation:

1) The <u>first ionization energy</u> is the energy required to release an electron from a gas neutral atom.

Hence, this is the energy required for this process:

  • Br (g)  → B⁺ (g) + e⁻

2) The <u>second ionization energy </u>is the energy required to release an electron from a gas ion with charge 1+.

Hence, this is the energy required for this process:

  • Br⁺ (g)  → B²⁺ (g) + e⁻

3) The<em><u> third ionization energy</u></em> is the energy required to release an electron from a gas ion with charge +2.

Hence, this is the energy required for this process:

<u />

  • <u><em>Br²⁺ (g)  → B³⁺ (g) + e⁻</em></u>
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What is the mass of CO2 lost at 20 min from the limestone sample?
harkovskaia [24]

Answer:

The mass, CO2 and CO3 from the limestone sample is discussed below in details.

Explanation:

(A) mass loss of sample of limestone after 20 min

= 0.8437g-0.5979g = 0.2458 g

From the given reaction of limestone, 2 mol of the sample gives 2 moles of CO 2.

Therefore  

184.4 g ( molar mass of limestone) gives2× 44 g of carbon dioxide.

1 g of sample gives 88/184.4 g of carbon dioxide

Hence 0.2458 g sample gives

= 88/184.4 × 0.2458 g = 0.117 g carbon dioxide

(B) mole of CO 2 lost = weight/ molar mass

= 0.117 g / 44 g/mol =0.0027 mole

(C). 1 mol of limestone contain 2 mol of carbonate ion

From the reaction we know that carbonate ion of limestone is converted into carbondioxide

Hence lost carbonate ion = 0.2458 g

(D) we know that

1 mol limestone contain 1mol CaCO​​​ 3

Hence in sample present CaCO​​​ 3

= 1mole / 184.4 g × 0.8437 g= 0.00458 mol CaCO​​​3

8 0
3 years ago
If an element gives away an electron, will it form a positive ion or a negative<br> ion?
Elan Coil [88]

Answer:

posotive

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8 0
3 years ago
Ca(s) + O₂(g) + S(s) → CaSO4(s)
san4es73 [151]

The mass of Calcium required to complete this reaction is 4.008 g.

  • Law of conservation of mass states that In a closed system, mass cannot be produced or destroyed, but it can be changed from one form to another.
  • The mass of the chemical constituents before a chemical reaction is equal to the mass of the constituents after the reaction.
  • In several disciplines, including chemistry, mechanics, and fluid dynamics, the idea of mass conservation is widely applied.

In the given reaction mass of product after completion of reaction is 13.614 g that means total mass of constituents before reaction should also be 13.614.

So,

mass of Ca + mass of O₂ + mass of S = mass of CaSO4

Ca + 6.400 g + 3.206 g = 13.614 g

mass of Ca = 13.614 - 9.606 = 4.008 g

Therefore, by law of conservation of mass 4.008 g of Ca is required for the completion of the reaction.

Learn more about mass conservation here:

brainly.com/question/2030891

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5 0
1 year ago
You are making lemonade and the calls for 6 cups Lemon juice (L), 3 Cups of sugar (S) and 5 cups of water (W) to make 12 Cups of
vova2212 [387]

Answer:

18 Cups

Submitted the assignment

Explanation:

4 0
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