1. How many grams are in 8.00 x 1025 atoms of Ss?
2. Balance the equation for the complete combustion of butane is
_C4H10+ _02_CO2 +_H2O
a)
3. Carry out the following operation(s) and express your answer in the proper number of
significant figures. Look at the equipment.
For a) tell which is better to get a more
accurate measurement and why (briefly) b) What is this called and give uncertainty
even if you cannot read this picture... c) Name this equipment and say if TC or TD
ta
а a
b.
b
E
d. How many significant figures are in 0.0140?
e. How many H atoms are present in 144.00 grams of caffeine C8H10N4O2?