Answer:
42.82 × 10²³ formula units
Explanation:
Given data:
Number of moles of CaCl₂ = 7.11 mol
Number of formula units = ?
Solution:
We will solve this problem by using Avogadro number.
1 mole of substance contain 6.022× 10²³ formula units.
7.11 mol × 6.022× 10²³ formula units / 1mol
42.82 × 10²³ formula units
Mass is more reliable as it is always constant, while weight can vary (e.g. weight of a rock on earth or on the moon)......Vote Me Brainliest!
The formula for time is Distance / Speed... so that would be taking note that 107 yard is 97.8 metre( 1 yard is 0.914 metre ) and then you finally find the answer by targeting 437. I'm not very good at explaining but try understanding the notes and you'll get it.
A dissolving liquid composed of polar molecules is a polar solvent.
The distinction of polar and non-polar liquids is important because the like dissolves like rule. This rule states that the solubility is greater when the polarity of the liquid is similar to the polarity of the solute.
So, to dissolve polar compounds (e.g. ionic compounds) you should use polar solvents (e.g. water).
Answer: polar solvent