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4 years ago

Which of the following will have the lowest boiling point?

Chemistry

2 answers:

erastovalidia [21]4 years ago

7 0

Answer: I think its C2H24

Explanation:

mash [69]4 years ago

3 0

Answer: C

Explanation:

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What do coefficients in chemical equations tell you?

Juliette [100K]

More information ^^^

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3 years ago

How do core electrons relate to the ionization energy of the atom?

Archy [21]

Answer:

For any given element, ionization energy increases as subsequent electrons are removed. For example, the energy required to remove an electron from neutral chlorine is 1251 kJ/mol. ... An even sharper increase in ionization energy is witnessed when inner-shell, or core, electrons are removed.

Hope it helps :)

6 0

3 years ago

One difference between mixtures and pure substances is that

defon

Answer:

The mixture is made up of different atoms and pure substance is made up of same type of atom.

The main difference is that mixture can be separated into its component by physical mean while pure substances can not be separated by physical process

Explanation:

Mixture:

The properties of the mixture are not same and contains the properties of all those component present in it.

it is a combination of one or more Pure substances and can be separated by simple physical methods.
it have varying boiling and melting point

Examples are:

mixture of salt and sand
Salt water is mixture of water and NaCl and can be separated by physical mean.

Alloys: its a mixture of different metal
Air: mixture of gases

Pure Substance:

Pure substances are those made of same type of atoms all elements and compounds are pure substances.

it can not be separated by simple physical mean

it have very constant and consistent melting and boiling point

Examples are:

Water : contain only water molecule
All elements: all elements are pure substance made of same atoms
All compounds: can not be separated by physical mean.

8 0

3 years ago

Read 2 more answers

HNO3 + S --> H2SO4 + NO Now identify the element oxidized and the element reduced. Which element is oxidized? Which element i

OleMash [197]

Answer: S is getting oxidized, N is getting reduced and O and H undergo no oxidation or reduction

Explanation:

The oxidation reaction is defined as the reaction in which a chemical species loses electrons in a chemical reaction. It occurs when oxidation number of a species increases.

A reduction reaction is defined as the reaction in which a chemical species gains electrons in a chemical reaction. It occurs when oxidation number of a species decreases.

For the given chemical reaction:

$HNO_3+S\rightarrow H_2SO_4+NO$

On the reactant side:

Oxidation number of H = +1

Oxidation number of N = +5

Oxidation number of O = -2

Oxidation number of S = 0

On the product side:

Oxidation number of H = +1

Oxidation number of N = +2

Oxidation number of O = -2

Oxidation number of S = +6

As the oxidation number of S is increasing from 0 to +6. Thus, it is getting oxidized. Similarly, the oxidation number of N is decreasing from +5 to +2. Thus, it is getting reduced.

The oxidation numbers of O and H remain the same on both sides of the reaction. Thus, they are neither getting oxidized or reduced.

Hence, S is getting oxidized, N is getting reduced and O and H undergo no oxidation or reduction

3 0

3 years ago

El arroz produce electricidad

Nina [5.8K]

El arroz si produce electricidad:)

3 0

3 years ago