Winter Break Homework
Mr Cruickshanks
Honors Chemistry
2014-2015
Over winter break you must do the following:
1. Read and take notes on pgs 80-87. Take not of the explanations of the conversions using
ratios. This is key.
2. Do Questions 28-45 from section 3.3
3. Read and take notes 287-303 do questions 1-31 in from 10.1 and 10.2
4. Do the problems below using ratios. Show your work.
5. Be prepared for a quiz on Monday the 5th about conversions using ratios.
Conversions
1 hour = 3600 seconds
1 meter = 3.28 feet
1 kg = 2.2 lbs
1 m/s = 2.2 miles/hour
1 mile = 5280 feet
1 km = 0.62 miles
1 lb = 0.45 kg
1 foot = 12 inches
Convert the following quantities.
565,900 seconds into days
17 years into minutes
43 miles into feet
165 pounds into kilograms
100 yards into meters
22,647 inches into miles
2678 cm into feet
12,198 doughnuts to dozens
0.5976 doughnuts to dozens
1 yard = 3 feet
1 light second = 300,000,000 meters
1 quart = 0.946 liters
1 inch = 2.54 cm = 25.4 mm
0.9786 dozen doughnuts to single doughnuts
If you have 3.786 mols of turkeys, how many turkeys do you have?
If you have 9.87625*10^42 toenails how many moles do you have?
If a mole of toenails has a mass of 3780kg, how many kg of toenails do you have?
If you have 48,642 kg of pennies and each penny has a mass of 0.0027kg, how many mols of
pennies do you have?
If you have 298g of Gold how many moles do you have?
If you have 72.5 moles of silver, how many atoms do you have, how much mass do you have?
If you have 58.65 g of gold how many moles do you have?
If you have 72g of H20, how many moles do you have?
If you have 32 moles of SF4, how many grams do you have?
10 grams of NaCl (that’s CL) equals how many moles? How many sodium Atoms are there?
You have 72g of CO2, how many atoms of oxygen are there?
You have 478g of buckeyballs, or C60, how many atoms of carbon do you have?