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kari74 [83]
3 years ago
14

Why is it important to living things that water is bonded by h bond and not by covalent or ionic one

Chemistry
1 answer:
nexus9112 [7]3 years ago
8 0
Because im pretty sure the molecules would just fall apart like salt which is ionic
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Ba stays as Ba+2 and Cl stays as Cl-
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Diamond is an allotrope of :
Marat540 [252]

Answer:

carbon

Explanation:

because it is an allotrope of carbon

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2 years ago
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If a buffer solution is 0.130 M in a weak acid (K_a = 1.7 x 10^-5) and 0.590 M in its conjugate base, what is the pH?
Serggg [28]
Use the Henderson-Hasselbach equation:
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8 0
3 years ago
Which one of the following best represents the predicted approximate chemical shift and coupling for the hydrogen(s) indicated w
melomori [17]

Answer:

The answer is quartet 2.40 ppm.

Note: Kindly find an attached image below for the part of the solution to this question

Sources: The image was researched from Course hero platform

Explanation:

Solution

Multiplicity or (n+1) rule:

It helps in determination of multiplicity of an individual proton or individual types of proton which are available in the molecule.

Multiplicity =(n+1)

Thus

The non equivalent protons which are attached from adjacent atom is denoted by n.

Now because there are three non-equivalent protons are present at adjacent carbon of methylene group, hence the multiplicity of methylene hydrogen is given as follows:

The multiplicity will be the same for the two hydrogen's. thus we compute multiplicity only for one  hydrogen atom stated below:

Non- equivalent = 3

Multiplicity = (3 +1)

= 4

= Quartet for 2H

A quartet for 2H indicates that the hydrogen atoms attached from the carbon, which is attached one side from a methyl group and the other side form an atom that have no any hydrogens.

Now due +I effect of carbonyl group, chemical shift value is high for these two hydrogens which is exactly at 2.40 ppm or 2.40 Quartet.

5 0
3 years ago
The element nickel has the following properties. Select the two that are chemical properties of nickel.
kkurt [141]
<span>a. It melts at 1455oC I know this is correct I need One more</span>
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