For the following errors, determine if the error will affect the calculation of qsystem. If it does affect the calculation, then state if it will increase or decrease the value of qsystem.

a. Placing the hot aluminum rod on the lab bench for 30 seconds before adding it to the calorimeter.
b. Adding 50 mL of water, but only recording the volume of water as 30 mL.
c. The solid NH4NO3 did not all dissolve after adding it to the water.
d. Some of the HCl splashed out while pouring it into the calorimeter.

Which of the following ocean acidification? are the most likely side effects of a ph less than 7.0 in the ocean b. more metal salts altering the ocean chemistry c. dissolution of the shells of marine organisms d. both a & b e. all of the above.

Agroup of students is studying convection current. they fill two identical balloons with the same amount of helium. one balloon is placed in a freezer and the other is in an area with warm air. after 10 minutes, the balloon are released from a height of 1 meter. which of the following to the students most likely observe? a) the warm balloon expands and rises. the cold balloon shrinks and sinks b) the balloon both rise. the cold balloon is larger than the warm balloon c) the cold balloon expands and rises. the warm balloon shrinks and sinks d) the balloon rise at the same rate. both balloons are the same size

Ais a mountain created from eruptions of lava, ash, rocks, and hot gases.