1)How many milligrams are there in 420 micrograms?
2)How many feet are there in 341 centimeters? (There are 2.54 centimeters in 1 inch)
3)How many significant figures are in the following numbers?
4)How many protons, neutrons, and electrons are there in 40K?
19 protons, 21 neutrons, 19 electrons
5)What is the electron configuration of mercury?
6)Name the following chemical compounds:
a)PbBr2 lead (II) bromide
d)CaS calcium sulfide
e)H2SO4 sulfuric acid
f)V(CO3)2 vanadium (IV) carbonate
g)P2O5 diphosphorus pentoxide
7)Write the chemical formulas for the following compounds:
a)ammonium nitrate NH4NO3
c)boron trichloride BCl3
d)iron (III) phosphate FePO4
e)nitric acid HNO3
f)potassium carbonate K2CO3
g)dinitrogen tetrachloride N2Cl4
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