Chapter 1.6 The Mole Flashcards Preview

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Flashcards in Chapter 1.6 The Mole Deck (7)
1

The gram formula mass of a substance is the mass of

one mole of that substance

2

What is the mass of one mole of potassium oxide?

K2O
(39 x 2) + (16)
= 94g

3

Mole Calculations: The the M, M, FM triangle, the M at the top of the triangle stands for what?

Mass

4

How many moles are present in 25g of calcium carbonate?

CaCO3
40+12+(16x3)
100g

Moles = Mass/FM
25/100 = 0.25 moles

5

MCV triangle is used to calculate

concentrations of solutions

6

What triangle would you use for this question: Calculate the concentration of a sodium hydroxide solution if 2 moles are dissolved in water to give 500cm3 of solution?

MCV

7

Balance the equation: Ca O2 ---> CaO

2Ca + O2 -----> 2CaO