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3 years ago

Which of the following are examples of chemical energy being released or stored? (2 points)

1 answer:

3 0

A boy eating a orange to survive because it’s going in his stomach and the sun heating a rock because Heat from the sun causes rock to crack or buckle from pressure caused by its atoms' increasing speed.

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Which groups on the periodic table contain metalloids?

Firlakuza [10]

Groups 13-16, hope this helps!

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4 years ago

Read 2 more answers

A mass spectrum of an organic compound shows the relative abundances of M to be 40.58% and M 1 to be 7.022%. Assuming the peaks

sveticcg [70]

Answer:

The number of carbon atoms in the organic compound is 16.

Explanation:

The relative intensity of M + 1 peak (relative to M = 100) in organic compounds can be predicted by the following formula:

[M + 1] = (number of C x 1.07) ---------------------------------------------------- (1)

This formula can also be used to determine the number of carbon from the given intensity. But first, the intensity of [M + 1] relative to [M] = 100 needs to be determined, for which, consider the following calculations,

$[M+1]=(\frac{M+1}{M}) (100)$

$[M+1]=(\frac{7.022}{40.58}) (100)$

$[M+1]=17.30$

Using equation 1 we get,

$number of C=\frac{[M+1]}{1.07}$

$number of C=\frac{17.3}{1.07}\\number of C = 16.168$

or number of C = 16

The remaining value, 0.168, can be due to the isotopes of hydrogen and oxygen in the organic compound.

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4 years ago

40 cm3 of acid were mixed with 60 cm3 of alkali in an insulated container. What name is given to this type of reaction?

Stells [14]

Answer:

neutralization reaction

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2 years ago

Why is energy a conceptual model?

alexgriva [62]

Answer:

Conceptual energy modeling does not produce the same accurate results as energy modeling with building elements

3 0

3 years ago

What is aqueous solution give few examples

Tems11 [23]

Answer:

An aqueous solution is a solution in which the solvent is water. It is mostly shown in chemical equations by appending (aq) to the relevant chemical formula. For example, a solution of table salt, or sodium chloride (NaCl), in water would be represented as Na+(aq) + Cl−(aq).

Explanation:

Hope this helps.

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3 years ago