Using the data below, determine the stoichiometry of the hydrated calcium sulfate, CaSO4.2H2O
Please Note: Although I will normally be an integer, in this theoretical calculation, you should report
the value of 3 to the correct number of significant figures.
Data:
Mass of crucible=14.2100 g
Mass of crucible + gypsum=
15.6016 g
Mass of crucible + contents after heating= 15.2979 g

There are 6.022 x 10^23 atoms of hg in 1 mole of hg. the number of atoms in 4.5 moles of hg can be found by multiplying 4.5 by 6.022 x 10^23 a. 2.7 x 10^24 b. 27 x 10^23 c. 2.71 x10^24 d. 27.099 x 10^23

Ahypothrticalax type of ceramic material is known to have a density of 2.10 g/cm3 and a unit cell of cubic symmetry with a cell edge length of 0.57 nm. the atomic weights of the a and x elements are 28.5and 30.0 g/mol, respectively. on the basis of this information, which of the following crystal structures is (are) possible for this material: sodium chloride, cesium chloride, or zinc blende

How many neutrons does a atom of cobalt have?