In a 4.29E1 g sample of NaHCO_3, how many grams of sodium are present? Use two decimal places in atomic masses. Only give the numeric value of your answer. Don’t include the units.

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

Which of these expressions are correct variations of the combined gas law? p1v1t2 = p2v2t1 both

Chromosome 17 is made of over million base pairs.