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Alexxandr [17]
4 years ago
10

HELP PLZ !! 10 POINTS !!

Chemistry
1 answer:
icang [17]4 years ago
6 0

Answer:

Endothermic:

- Dry Ice subliming.

- Condensing of H2O on the side of a glass.

- Input of heat energy

- Ice melting

Exothermic:

- Vaporizing a block of Iron

- Water freezing

- Deionizing argon ions

- Release of heat energy

- The other one about the soot being deposited on the walls inside a chimney, i think it's exothermic.

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The rabbit prey population will decrease.

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More predators are there to eat the prey

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A binary ionic compound is known to contain a cation with 51 protons and 48 electrons. The anion contains one-third the number o
7nadin3 [17]

Answer:

SbCl_3

Explanation:

The cation contains 51 protons and 48 electrons. The electrons are only lost not protons, so the element which corresponds to atomic number 51 is the cation which is Antimony (Sb).

Also, the charge on the cation is 51 - 48 = 3

This is because neutral atom contains the same number of electrons as protons.

Given the anion has one-third protons as cation which means thta:

Number of protons in anion = \frac {51}{3}=17

This corresponds to chlorine atom. The electrons are 1 greater than protons means that it has gain 1 electron.

So,

Sb     Cl

3         1

Cross multiply the valency.

So, formula is SbCl_3

4 0
3 years ago
How does the temperature of the air change with altitude?
TiliK225 [7]
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8 0
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Are diamonds flammable?
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kap26 [50]

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No.

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