Chemistry March 5-10, 2015

•OBJECTIVE: Students will use the mole to determine the volume of a gas by completing examples in their note-books.

•W.O.D. Myopic-short sighted

•WARM-UP

1.The molar volume for a gas is equal to 22.4 Liters at STP. What conditions does STP represent?

2.How many representative particles are there in 22.4 L of H2 at STP?

•OBJECTIVE: Students will complete in writing several questions on the use of the mole.

•W.O.D. Myopic-short sighted

•WARM-UP

Which of the following is the larger quantity:

a. 48g O2 b. 48 Liters of O2  Explain your answer

CW

How many moles are there in

1.44.8 L O2

2.12.5 L H2

3.23.8 L NH3

What volume does each occupy:

1.1.2 moles H2

2.0.87 moles O2

3.2.7 moles NH3

Complete handout on mole-volume (graded)

2-step mole problems

1.What is the mass of

a.1.2 x 1025 molecules CO2

b.36 Liters O2

2. What is the volume of

a.84g CH4

b.3.02 x 1020 formula units NaCl