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3 years ago

HELP DUE IN 5MIN WILL MARK BRAILIEST

Chemistry

1 answer:

Stells [14]3 years ago

6 0

Explanation:

The problem deals with a phase transition from solid to liquid. To the left we have ice and to the right we have liquid water.

For such change to take place, the process of melting must occur. During melting, a solid changes state from solid to liquid by taking energy from the environment.

In solid state, the molecules of the water are in a fixed state about their fixed lattice.
As the solid ice gains energy from the environment, it begins to melt.
Energy increase causes the molecules of the water to start flowing to form a liquid.

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Which carbonyl compounds do not undergo an aldol reaction when treated with −oh in h2o? select all that apply?

GREYUIT [131]

Answers:
Among many few compounds are shown below which can not undergo Aldol Condensation reactions.

Explanation:
Aldol Condensation reactions are given by those carbonyl compounds which are capable of forming conjugate bases called as Enolates. Enolates are formed when carbonyl compounds having hydrogen atoms at alpha position are treated with strong bases. This hydrogen atom at alpha position is mildly acidic in nature and readily donated to base as the upcoming conjugate base i.e. has stability due to resonance.
So those carbonyl compounds which lacks these acidic protons at alpha position are not able to form enolates, Hence, unable to undergo Aldol Condensation reactions. Few examples are attached below,

6 0

3 years ago

Who is the atom from the other end of town?

Yanka [14]

Answer:

The Atom is a superhero character from DC Comics. He is a founding member of the Justice League and possesses the ability to shrink himself to subatomic size. In the comics, he is Ray Palmer, a scientist from Ivy Town.

Explanation:

7 0

1 year ago

1. Is the reaction between magnesium and oxygen in the air spontaneous?<br>

Vikki [24]

Answer:

Once ignited, a ribbon of magnesium metal burns freely in air to form solid magnesium oxide in the form of a white powder. The reaction is plainly spontaneous even though ΔS is negative.

4 0

2 years ago

The average atomic mass of nitrogen is 14.0067. The atomic masses of the two stable isotopes of nitrogen.^14 N and^15 N, are 14.

Ymorist [56]

Answer:

The answer to your question is Abundance N-14 = 99.63%

Abundance N-15 = 0.37%

Explanation:

Data

Average atomic mass = 14.0067 amu

N-14 = 14.003074002

N-15 = 15.00010897

Abundance N-14 = ? x

Abundance N-15 = ? 1 - x

Formula

Average atomic mass = (mass of N-14)x + (mass of N-15)(1 - x)

Substitution

14.0067 = 14.003074002x + 15.00010897(1 - x)

Solve for x

14.0067 = 14.003074002x + 15.00010897 - 15.00010897x

14.0067 - 15.00010897 = 14.003074002x - 15.00010897x

-0.9934 = -0.99703x

x = -0.9934 / -0.99703

x = 0.9963

Conclusion

Abundance N-14 = 0.9963 x 100 = 99.63 %

Abundance N-15 = 1 - 0.9963 = 0.0037 x 100 = 0.37 %

6 0

2 years ago

Can someone please help? This is really hard!!

Arte-miy333 [17]

Answer:

Less

Explanation:

The hydronium from the HCl is used to neutralize the bicarbonate in the baking soda. The hydronium is the acid and the bicarbonate ion is the base while the sodium and chloride ions are pH-neutral. Since theres a 1:1 mole ratio of hydronium to HCl and bicarbonate to sodium bicarbonate, it would require less HCl to neutralize a less concentration baking soda solution.

6 0

1 year ago