Quantitative data measures the aspect in the real world in quantifiable terms, numbers. Qualitative data observes the qualities of natural phenomena such as opinions and motivations.
By definition, Molarity is the mole of solute per unit volume of solution.
<span>Molarity= (Moles of Solute) / (volume of solution in litre)
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Since we can calculate both volume and mole in numbers. Therefore molarity is quantitative.
To calculate the empirical formula of a compound, we have to follow some steps:
Step 1: Calculate the number of moles of K and O.
For this we need to know the molar mass of K and O.
Molar mass of K=39.0983 g/mol
Molar mass of O=16 g/mol
Given mass of K= 32.3 g
Given mass of O= 6.61 g
Number of moles=Mass /molar mass
So, Number of moles of O=Mass /molar mass
=6.61/16
=0.41
Number of moles of K =Mass /molar mass
=32.3/39
=0.82
Step 2: Find the lowest number of moles and divide each element's moles by it:
Here the lowest number of moles are of oxygen(O) so dividing each element's moles by its mole number will give:
K =0.82/0.41
= 2
O = 0.41/0.41
= 1
So the empirical formula of the compound should be:
K₂O.
Answer:
Percent by mass is calculated by tihis formula, Mass of solute (g) ÷ mass of solution (g)] × 100.
Explanation:
For example: if you have a solution 45% m/m (mass percentege), you have 45 g of solute in 100 g of solution.
There is a place in Upper Peninsula that is named Iron or Iron Mountain.
