The reactants are combined (reacted) and the final mass of the system is determined. If the final mass of the system is 120 g, what was the percent yield of the reaction?

Asample contains 16.75 g of the radioisotope u-236 and 50.25 g of its daughter isotope, th-232. how long did it take for decay to take place if one half-life of u-236 is 23 million years? 46 million years 69 million years 92 million years 115 million years

What does the cell nucleus do or, how does it function?

Given that 1 mi = 1760 yd, determine what conver- sion factor is appropriate to convert 1849 yd to miles; to convert 2.781 mi to yards.