Unit 5 Review

molar mass (single elements)

100

hydrogen

1

200

Na

23

300

P

31

400

W

184

500

197 g/mol

gold

pOH

100

when pH=7

7

200

when pH=10

4

300

when pH=13

1

400

when pH=5

9

500

formula for pOH when given concentration is 

-log [OH]

operations

100

to get concentration, divide moles by 

volume/liters

200

to get from grams to moles, divide by

molar mass

300

to get from moles to grams _____ by molar mass

multiply

400

MV=MV is ther formula for a 

dilution

500

to balance an equation, make everything on the left _____ everything on the right

equal

pH

100

water 

7

200

soda pop

2.5

300

coffee

5.0

400

Hand soap

10

500

formula for pH when given concentration is

-log[H+]

weak or strong

100

hand soap

weak

200

drain cleaner

strong

300

hydrochloric acid

strong

400

water

what is weak

500

citrus

weak