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kakasveta [241]
3 years ago
11

Why does the Zr4+ ion exist?

Chemistry
2 answers:
antiseptic1488 [7]3 years ago
7 0
Zr has atomic number 40 , so it need to lose 4 electrons to gain noble gas configuration of the noble gas Kr
marishachu [46]3 years ago
7 0

Answer:

4 electrons are lost.

Explanation:

Hello,

Zirconium's electron configuration is:

Zr^{40}=1s^22s^22p^63s^23p^64s^23d^{10}4p^65s^24d^2

This allows us to infer that when all the electrons present at both the 5s^2 and the 4d^2 orbitals, 4 electrons are lost (two from 5s^2 and two from 4d^2), allowing the Zr^{4+} species to exist.

Best regards.

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How much heat (in Joules) is needed to raise the temperature of 257g of ethanol (cethanol=2.4 J/g°C) by 49.1°C?
Sonbull [250]

Answer:

Q = 30284.88 j

Explanation:

Given data:

Mass of ethanol = 257 g

Cp = 2.4 j/g.°C

Chnage in temperature = ΔT = 49.1°C

Heat required = ?

Solution:

Specific heat capacity:

It is the amount of heat required to raise the temperature of one gram of substance by one degree.

Formula:

Q = m.c. ΔT

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m = mass of given substance

c = specific heat capacity of substance

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Now we will put the values in formula.

Q = 257 g× 2.4 j/g.°C × 49.1 °C

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8 0
3 years ago
Erika is asked to create a model showing a negatively charged Carbon ion. Which model should she create?
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8 0
2 years ago
A 15.0 L tank of gas is contained at a high pressure of 8.20 x 10^4 torr. The tank is opened and the gas expands into an empty c
Inga [223]

Answer:

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Boyle's law is given mathematically as;

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3 years ago
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Answer:

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Explanation:

your welcome!!!!!

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