In which grouping of the periodic table do the elements have simliar properties a only columns b both rows and columns c in the periods d only row answer fas

The molecular formula for caffeine is cshion402. which of the following elements is not found in caffeine?

How many grams of co(g) are there in 74.5 ml of the gas at 0.933 atm and 30o c?

Aroller coaster is traveling at 13 mi./s when you purchase a hill that is 400 m long and down the hill exonerate at 4.0 m/s squared what is the final velocity of the posterior found your answer to the nearest number