There are 3 significant figures. Significant numbers are the numbers that build up your total number. 1-9 always count, 0 only counts if it’s after another number. For example: 0,901 has 3 significant numbers as does 0,910. 9,10 also has 3. 0,09 has just 1.
The exact answer is 511.219514
Answer: NaCl is an ionic compound
Explanation: Sodium Chloride is formed from Na+ and Cl- ions.
It is soluble in water, it has crystalline structure, it has high melting point and
It is insulator as solid form. Water solution leads current.
Answer:
c. Both i & ii
Explanation:
Moles do not change with temperature hence Mole fraction does not depends of temperature.
Molality is number of moles of solutes per kilogram of solvent. It has no relationship with temperature.
This means both of them do not change wit the change in temperature.
Correct option;
c. Both i & ii
