Download Chemistry 100

Announcements
1.
2.
3.
4.
Prelaboratory Assignment due at the
beginning of lab tomorrow (pg. 42 of
lab book).
Proper dress required for lab!
Online HW 4 (Type II) due tomorrow
by 7:00pm.
Online HW 5 (Type I) due Monday
10/21 and (Type II) due Wednesday
10/23.
Clicker #1
When comparing what you’re given to a
balanced chemical equation, you must be in
units of
A)
B)
C)
D)
E)
moles
grams
molarity
atm
Any unit can be directly related to a
balanced chemical equation.
Mass
Volume
(Solution)
Limiting
reactant
Molarity
Gas Properties
(P, V, T)
MOLES!
(# of particles)
Calculate
amount of
product
Balance
equations
Clicker #2
Which of the following reaction mixtures would produce
the greatest amount of product, assuming all went to
completion? Each involves the reaction symbolized by
the equation:
N2(g) + 3H2(g) → 2NH3(g)
A)
B)
C)
D)
3 moles of N2 and 3 moles of H2 2 mol NH3
1 mole of N2 and 6 moles of H2
2 mol NH3
1 mole of N2 and 3 moles of H2
2 mol NH3
Each would produce the same amount of product.
Example #1
•
If 15.0 mg of P2O5 was
produced in this reaction,
what masses of P4 and
KClO3 were required?
Example #2
•
Assume you have 5.00 g of
Mg and 10.0 g of CO2
available. You allow them
to react. Prove that mass
has been conserved.
Clicker #3
What should be the total mass present
after the reaction is complete?
A)
B)
C)
D)
E)
1.24
5.00
9.54
10.0
15.0
g
g
g
g
g