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3 years ago

How can atoms have more than 32 electons?

Chemistry

1 answer:

guajiro [1.7K]3 years ago

3 0

86 atoms have more electrons than Germanium

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I need helppppppppppp. Btw the question is “Select three populations shown in the prairie ecosystem.”

nadezda [96]

I think it’s all of the above :))

6 0

3 years ago

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At 25 °C, only 0.0990 mol of the generic salt AB3 is soluble in 1.00 L of water. What is the Ksp of the salt at 25 °C? AB3(s)↽−−

maksim [4K]

Answer:

$Ksp=2.59x10^{-3}$

Explanation:

Hello,

In this case, given the 0.0990 moles of the salt are soluble in 1.00 L of water only, we can infer that the molar solubility is 0.099 M. Next, since the dissociation of the salt is:

$AB_3\rightleftharpoons A^{3+}+3B^-$

The concentrations of the A and B ions in the solution are:

$[A]=0.099 \frac{molAB_3}{L}*\frac{1molA}{1molAB_3} =0.0099M$

$[B]=0.099 \frac{molAB_3}{L}*\frac{3molB}{1molAB_3} =0.000.297M$

Then, as the solubility product is defined as:

$Ksp=[A][B]^3$

Due to the given dissociation, it turns out:

$Ksp=[0.099M][0.297M]^3\\\\Ksp=2.59x10^{-3}$

Regards.

4 0

3 years ago

PLEASE help

Goryan [66]

Answer:

Explanation:

because it has gained an electron

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3 years ago

A chemist is likely to do which of the following? . . 1)write a formula for a paint coating . 2)explore land areas for digging o

Serggg [28]

"W<span>rite a formula for a paint coating" is the one among the following choices given in the question that a chemist is likely to do. The correct option among all the options that are given in the question is the first option or option "1". I hope that this answer has actually come to your help.</span>

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3 years ago

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Select the single best answer. Explain the observed trend in the melting points for four isomers of molecular formula C7H16. mp

damaskus [11]

Answer:

The ability of the molecule to pack more tightly increases the melting point.

Explanation:

In hydrocarbons of same molecular formula, melting point is determined by:

weak intermolecular forces
Molecular symmetry

Higher the intermolecular forces and molecular symmetry, higher will be the melting point.

Intermolecular forces in hydrocarbons decreases with branching. Moreover, branching interfere the tight packing of the molecule in the crystal. Therefore, branched hydrocarbons tend to have lower melting point.

However, in highly branched hydrocarbons molecular symmetry increases which results in tight packing of the molecule in the crystal.

So, highly tight packed molecules tend to have high melting point.

As (CH3)2CHC(CH3)3 is highly branched and has high molecular symmetry, therefore, its melting point is highest among given.

So, among the given, option c is correct.

5 0

3 years ago