The weights of sodium chloride salt and three petri dishes are 99.99 g, 100.13g, and 100.23g respectively. which of the following is the average mass of salt to the correct number of significant figures? 100.1167 100.117 100.12 100.1

40 kg/h 0.900 kg A/kg 0.100 kg B/kg 30 kg/h 0.600 kg A/kg 0.400 kg B/kg 2. 100 kg/h 0.500 kg A/kg 0.500 kg B/kg 30 kg/h 0.300 kg A/kg 0.700 kg B/kg

In calibrating a 50 mL buret, a student found that 50 mL of water measured from the buret at 21oC weighed 49.9381 grams. If 1.000 gram of water occupies 1.0043 mL at this temperature, what is the actual volume of water delivered by the buret based on this single measurement?

For a BCC crystal, which has higher surface energy( 1 0 0 ) or  ( 1 1 0 )? Why?