1. A student measures the mass and volume of a sample of iron at room temperature and 101.3 kPa. The mass is 30.0 grams and the volume is 4.00 cubic centimeters. The student
calculates the density of the sample. What is the percent error of the student's calculated
density?

Using a value of ksp = 1.8 x 10-2 for the reaction pbcl2 pb+2(aq) + 2cl -(aq). if the value of ksp was determined to be only 1.2 x 10-2: too much solid has dissolved. additional precipitate is forming. the solution is unsaturated. the ions are now combining to reduce their concentrations.

Which statement is best described as a atom

All motion is caused by force? true or false