We will get the molality from this formula:
Molality = no.of moles of solute / Kg of solvent
So first we need the no.of moles of KNO3 = the mass of KNO3 / molar mass of KNO3
no.of moles of KNO3 = 175 / 101.01 = 1.73 mol
By substitution in the molality formula:
∴ molality = 1.73 / (750/1000) = 2.3 Molal
The motion of its particles determines an objects thermal energy.
Answer:
I think the last one
Explanation:
The reason for that is because when you go up to present something you always want to try to hav believability and confidence.
No wind is natural. Need to write something to make it 20 letters :)
