Name: Problem 8: (2 pts.) (Show all work.) What is the molar mass of the followi

Question

Name: Problem 8: (2 pts.) (Show all work.) What is the molar mass of the following molecu Date: les? a. 1 mole of ethanol grams of ethanol. b. 1 mole of methyl amine grams of methyl amine. Problem 9: (1 pt) (Show all work. Apply the factor label method.) What is the mass in grams of 150 mm les milli moles of dichloro ethane with formula CH? Problem 10: 1 pt.) (Show all work. Apply the factor label method.) How many chlorine atoms are in 150 mmoles of dichloromethane? Problem 11: (4 pts.) (Show all work. Show the formula and calculate the formula weight of the following compounds. a. calcium chloride b. sodium nitrate Problem 12: (5 pts) (Show all work. Apply factor label method and supply answer to proper significant figures) a. How many compounds are there in 98.4 grams of calcium chloride? b. How many calcium ions are there in 98.4 grams of calcium chloride? c. How many chloride ions are there in 98.4 grams of calcium chloride? d. How many compounds are there in 85.0 grams of sodium nitrate? How many nitrate ions are there in 85.0 grams of sodium nitrate? e. 21 Page

Explanation / Answer

Ans 8 :

a) 1 mole of ethanol

The mass of 1 mole of ethanol can be calculated by the sum total of the molar masses of all its consituents

So it is equal to 46.07 grams

b) 1 mole of methyl amine mass will also be equal to the sum total of the molar masses of all its constituents.

So it is equal to 31.1 grams

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