An isotope of manganese has 25 protons and 30 neutrons. What is the mass number of this isotope?

Why do the pH scale generally range from 0 to 14 in aqueous solution?

What is the appropriate symbol for an isotope of calcium-42 corresponding to the isotope notation a/z X.

How many moles are contained in 3.131 * 1024 particles? A. 5.199 mol B. 18.85 mol C. 0.5199 * 1023 mol D. 1.885 * 1047 mol

Give the hybridization shape and bond angle for each carbon in ch3cn

Benzene was treated with isopropyl chloride in the presence of aluminum trichloride under conditions that favor dialkylation. draw the major product (s) expected from this reaction.

Collagen is made of fibers and is found in tendons and cartilage. Collagen contributes to meat toughness and is, therefore, an example of which type of protein?

1. Why does CH30 evaporate faster than water?

How does concentration affect our daily lives in science?

How many nitrogen atoms are in 2.79 mo. of NH3

What is the chemical formula for polysaccharide?