Place these unknown pH test papers in order from most acidic to most alkaline. A. Paper D, paper C, paper B, paper A
B. Paper B, paper A, paper C, paper D
C. Paper C, paper D, paper A, paper B
D. Paper D, paper C, paper A, paper B

B OR a one of them  think

Explanation:

hydroxyl -oh

alcohols, always polar, can form hydrogen bonds with h2o molecules

carboxyl -cooh  

cargoxylic acids, has acidic properties which is a source of hydrogen ions, found in cells in ionized for with a charge of oh-1

carbonyl > co

ketone if within skeleton, aldehyde if group is at the end of skeleton, k & a may be structural isomers, it determines 2 sugars (ketose & aldose)

amino -nh2

amines, acts as a base, it can pick up h+ ions from surrounding solution, ionized with charge of 1+

methyl ch2

addition to rna/dna affects and gene expression

phosphate -opo3 ²⁻

organic phosphates, contributes to negative charge to, molecule that it is a part of, and potential to react with h20

sulfhydryl -sh

thiols, cross-linking stabilize the protein, and it is structure

answer: 21

step-by-step explanation:

divide 630 by 30. 30 goes into 630 21 times