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jasenka [17]
3 years ago
15

Explain why the first ionisation energy of krypton is greater then the first ionisation energy of bromine

Chemistry
1 answer:
MrMuchimi3 years ago
3 0

Answer:

Kr has one more electron than br and so, the nuclear charge increase, which means the nuclear attraction between the nucleus and outer most electron will increase and so will be harder to remove the electron from Kr than Br, so Kr has higher 1st ionisation.

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If 2.12 Moles of bromine react with excess phosphorus; How many moles of phosphorus tribromide can be produced?
Maksim231197 [3]

6 molls

As a result, if two moles of dinitrogen gas are specified, six moles of dihydrogen gas are needed.

5 0
3 years ago
An empty graduated cylinder weighs 55.26 g. When filled with 50.0 mL of an unknown liquid, it weighs
marysya [2.9K]

Answer:

.743 g/mL

Explanation:

Hopefully this helps :)

5 0
3 years ago
What is the kb of the base po−34 given that a 0. 48m solution of the base has a ph of 12. 70? the equation described by the kb v
podryga [215]

The equation described by the kb value is 5.21 x 10^-^3.

The potential of Hydrogen is what pH is formally known as. The negative logarithm of the concentration of H+ ions is known as pH. Thus, the definition of pH as the amount of hydrogen is provided. The hydrogen ion concentration in a solution is described by the pH scale, which also serves as a gauge for the solution's acidity or basicity.

Assuming  PO₄³⁻ (the phosphate anion).

PO₄³- + H₂O ==> HPO₄²⁻ + OH⁻

Kb = [HPO₄²⁻][OH⁻] / [PO₄³⁻]

We can find the [OH⁻] from the pH of 12.70.

pH + pOH = 14

14.0 - 12.7 = 1.3 = pOH

[OH] = 1x10^-^1^.^3

[OH-] = 5.0x10^-^2 M

[HPO₄²⁻] = 5.0x10^-^2 M

Kb = (5.0x10^-^2)2 / 0.48

     = 2.5x10^-^3 / 0.48

Kb = 5.21 x 10^-^3

Learn more about pH here:

brainly.com/question/8758541

#SPJ4

3 0
1 year ago
TIMED ASSIGNMENT
galina1969 [7]

Answer:

27 grams

Explanation:

mass = density × volume

3 0
4 years ago
The diagram shows a simple model of an Earth process.
Mariulka [41]

Answer:

The condensation of water vapor driven by clouds in the atmosphere

Explanation:

Hope this helps:)

7 0
3 years ago
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