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AleksAgata [21]
3 years ago
13

Why is a high temperature needed to melt potassium iodide?

Chemistry
2 answers:
castortr0y [4]3 years ago
6 0

Explanation:

Potassium Iodide -

It is a salt , which is made of the ions of potassium and iodine ,

Potassium being the cation , and iodide being the anion .

The ions of this salt are held by strong ionic forces , which hold the ions together very strongly .

Hence , a lot of energy is required to melt the salt , as the bond between the ions is very strong .

Hence , the melting point of this salt , i.e. , Potassium Iodide , is very strong .

goldfiish [28.3K]3 years ago
4 0
Potassium Iodide have a lot of strong bonds which requires a very high temperature (high energy) to break them and change into a different state of matter. 
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Most of the food that organisms eat can be traced back to? .
9966 [12]

Answer:

A. Plants

Explanation:

Plants are producers, which make their own food. Other organisms, such as rodents, birds, and wild cats, are consumers, which receive their energy from plants or other consumers.

6 0
2 years ago
By what quantity must the heat capacity be divided to obtain the specific heat of that material
masha68 [24]
<span>Heat capacity of an object, is the amount of heat energy or thermal energy (unit: Joule) needed to raise the temperature of the object by 1 degree celsius. Unit of heat capacity is J/°C 

Larger object will surely need larger amount of thermal energy to raise its temperature. If you compare 1 litre of water with 0.5 litre of water, the 1L water will have two times the heat capacity. 

It will be more useful to compare specific heat capacity, because then it is the amount of heat energy or thermal energy (unit: Joule) needed to raise the temperature of 1 unit mass of the object by 1 degree celsius. You can then compare between 1 unit mass of water and 1 unit mass of iron. 
Water has higher specific heat capacity than iron, meaning that you need more energy to heat up 1kg of water, then to heat up 1kg of iron. 

The unit will then be J/(kg °C) or J/(g °C).
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6 0
3 years ago
What number is international system of units based on
fgiga [73]
I think it's 10 but i may not be right so, sorry if it's wrong lol
3 0
3 years ago
The number of electrons in a neutral atom of hydrogen (H) atom is
vesna_86 [32]
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7 0
3 years ago
How can I balance chemical equations by providing the correct coefficients? For example: [?]Pb(NO3)2 + [?]NaCrO4 = [?]PbCrO4 + [
melomori [17]

Answer:

Pb(NO₃)₂ + Na₂CrO₄ —> PbCrO₄ + 2NaNO₃

The coefficients are: 1, 1, 1, 2

Explanation:

Pb(NO₃)₂ + Na₂CrO₄ —> PbCrO₄ + NaNO₃

The above equation can be balance as follow:

Pb(NO₃)₂ + Na₂CrO₄ —> PbCrO₄ + NaNO₃

There are 2 atoms of Na on the left side and 1 atom on the right side. It can be balance by writing 2 before NaNO₃ as shown below:

Pb(NO₃)₂ + Na₂CrO₄ —> PbCrO₄ + 2NaNO₃

Now the equation is balanced.

The coefficients are: 1, 1, 1, 2

3 0
2 years ago
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