The following measurements were made to determine the density of a material whose value was, according to the Handbook of Chemistry and Physics, 1.15 g/mL Trial #1 .0.95 g/mL Trial #2 1.16 g/mL Trial #3 1.26 g/mL a. make a general comment on the accuracy of these results b. make a general comment on the precision of these results c. what may have caused these results?

Why do scientists look for patterns in the world? a. patterns can explain observations. b. patterns never change, no matter what. c. patterns are easy for scientists to detect. d. patterns are all the same, through all time.

When 13.3 g koh is dissolved in 102.7 g of water in a coffee-cup calorimeter, the temperature rises from 21.4 °c to 31.53 °c. what is the enthalpy change per gram of koh (j/g) dissolved in the water? * take the density of water as 1.00 g/ml. * assume that the solution has a specific heat capacity of 4.18 j/g*k. enter to 1 decimal place. do not forget the appropriate sign /(+). canvas may auto-delete the (+) sign

What are the chemical names of these compounds? ke: mg3n2: reset next