Dissolution means to make the compound apart, So when we have ionic compounds like NaI which has metal and non-metal ions, It separates into parts of positive ions and negative ions. After we separate this compound apart we will put the charge of each on above its symbol and then start to balance the equation of the dissolution.
So the dissolution equation of NaI is:
NaI(s) → Na^+(s) + I^-(Aqu)
Answer:
can be replaced in a short amount of time
Explanation:
done
<u>Question 1</u>
The formula mass of methanol is 
g/mol.
Therefore, in 5.0 grams of methanol, there are 
moles.
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<u>Question 2</u>
The formula mass of copper(II) carbonate is 
g/mol.
This means that in 9.0 grams of copper(II) carbonate, there are 
moles.
Using Avogradro's number, there are 
molecules.
<u>Question 3</u>
The formula mass of cyclohexane is 
g/mol.
So, 3.0 grams of cyclohexane is the same as 
moles.
<u>Question 4</u>
The formula mass of benzene is 
g/mol.
This means that 4.00 moles of benzene has a mass of 
grams.
<u>Question 5</u>
1000 atoms of calcium is the same as 
moles.
This is equal to 
grams.
Answer:
Calcium (Ca²⁺)
Explanation:
Calcium is very important mineral, found in teeth and bones primarily.
It is needed for the strong bones.
It is very important to maintain the bones in order to support our skeleton.
In our body it is also important to carry out other functions like in muscles, nerve function and also for heart.
If our diet is not full of calcium, the calcium deficiency may occur which leads to the weakening of bones and cause fracture.
The dietary source of calcium includes:
Yogurt, cheese, milk
beans such as peas, peanuts.
fishes
almonds, oranges, molasses
A. an ion
The atom gains a net electrical charge if the number of protons and electrons are not equal which makes it an ion.
