The most abundant elements by mass in the body of a healthy human adult are: Oxygen (61.4%), Carbon (22.9%), Hydrogen (10.0%), and Nitrogen (2.6%). The weight which a 75 kg person would gain if all `.^(1)H` atoms are replaced by `.^(2)H` atoms is:

The most abundant elements by mass in the body of a healty human adult are: oxygen (61.4%), carbon (22.9%), hydrogenn (10.0%) and nitrogen (2.6%). The weight which a 75kg person would gain if all ""^(1)H -atoms are replaced by ""^(2)H -atoms is-

The most abundant amounts by mass in the body of a healthy human adult are oxygen (61.4%), carbon (22.96%) hydrogen (10.0%) and nitrogen (2.6%). The weight which a 75 kg person would gain if all ""^(1)H atoms are replaced by ""^(2)H atoms is

An organic compound containing oxygen, carbon, Hydrogen and nitrogen contains 20% C, 6.7% H and 46.67% N. Its molecular weight was found to be 60. The molecular formula of the compound is

An organic compound contains 40% carbons atom 6.67% hydrogen atoms and remaining oxygen atoms by mass. The empirical formula will be-

An organic compound contains 40% carbons atom 6.67% hydrogen atoms and remaining oxygen atoms by mass. The empirical formula will be-

The compound A has the following percentage composition by mass : carbon 26. 7%, oxygen 71.1 %, hydrogen 2.2%. Determine the empirical formula of A. (Work to one decimal place) (H = 1, C = 12, O = 16). If the relative molecular mass of A is 90, what is the molecular formula of A ?

In the atomic weight determination, Dalton suggested the formula of water as HO and the composition of water as hydrogen = 12% and oxygen = 87.5%, by weight. What should be the atomic weight of oxygen on H-scale, on the basis of this information?