To verify the previous experiment, the chemistry student carried out the next experiment and recorded the data for you in the following Data Table. Directions: Place 100 mL of filtered, saturated PbCl2 in a 150 mL beaker and put it under a dryer to evaporate the water. Record the necessary data in the Data Table.

Complete the Data Table.

Since the data allows it, you should use 3 significant digits for all your answers.

Molecular weight of PbCl2 = 278 g/mole

Mass of beaker + PbCl2 = 62.19 g

Mass of beaker = 57.77 g

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.

Which of the following shapes would represent a molecule with two bonded atoms and 3 lone pairs on only one of them , trigonal planar , bent , trigonal pyramidal , linear

Which of the following is not one of the steps in the scientific method a. hypothesize b. summarize c. analyze d. familiarize