The first blank is a compound, second is a mixture
Answer:
Salt is the pure substance out of them all.
<u>Given:</u><u> </u>
Mass of Nitrogen (N₂) gas = 75 grams
<u>Finding the number of moles of N₂:</u><u> </u>
We know that the molar mass of N₂ is 28 grams/mole
Number of moles = Given mass / Molar mass
Number of moles = 75 / 28
Number of moles = 2.68 moles
Hence, there are 2.68 moles in 75 grams of Nitrogen Gas
1 liter= 1,000,000 microliters
20 mL= 20,000 microliter
I hope this helped ;)))
