How many moles are present in 454 grams of co2?
a. 10.31 mol
b. 4.54 mol
c. 37.83 mol
d. 14.18 mol
e. 1.3 mol

Need on both questionswill markbr />

Which atom or ion is the largest? a. k b. k+ c. ca d. ca2+ e. li

4.25g sample of solid ammonium nitrate dissolves in 60.0g of water in a coffee-cup calorimeter, the temperature drops from 22.0 c to 16.9 c. assume that the specific heat of the solution is the same as that of pure water. calculate delta(h) (in kj/mol nh4no3) for the solution proces.