The sugar molecule 2-deoxyribose is the basic constituent of deoxyribonucleic acid (DNA). The mass percent composition of 2-deoxyribose is 44.77% carbon, 7.52% hydrogen and oxygen. If 50g of 2-deoxyribose contains 2.2456 x 1023 molecules, calculate its empirical and molecular formula.

The following reaction shows sodium carbonate reacting with calcium hydroxide. na2co3 + ca(oh)2 → naoh + caco3 how many grams of naoh are produced from 20.0 grams of na2co3? (molar mass of na = 22.989 g/mol, c = 12.01 g/mol, o = 15.999 g/mol, ca = 40.078 g/mol, h = 1.008 g/mol) 12.2 grams 15.1 grams 24.4 grams 30.2 grams

The formation of a solid, also known as a is an indication of a chemical change. precipitate particulate particle powder

Draw any one of the skeletal structures of a 2° alkyl bromide having the molecular formula of c6h13br and two stereogenic centers. indicate chirality by using wedge and hashed wedge notation. lone pairs do not need to be shown.