The mass of water needed to fill a flask (different than the flask discussed in the previous question) is 186.88 g. the density of water at various temperatures is listed in appendix e of your laboratory manual. if the temperature is 24°c, what is the volume of the flask in liters?

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

How many moles is 14.5 cm^3 of platinum? the density of platinum is 21.45 g/cm^3.

Mary is conducting an experiment on how pollution affects plant growth. how can she ensure that her data are reliable?