How many neutrons does bromine have?

a. 10

b. 35

c. 45

d. 80

How many different kinsds of polypeptides, each composed of 12 amino acids, could be synthesized using 20 common amino acids?

Which of the following will result in a chemical change? A. Burning coal in a furnace B. Drying wood in a shed C. Melting ice to obtain water D. Evaporating alcohol into vapor

A Gas giant often has what satellites than a terrestrial planet?

How many magnesiums are in 2mg2 O3

All modern fertilizers use PO43 - as a source of phosphorus. Use your knowledge of the old methods to determine the moles of phosphorus found in 10.0 grams of (15-15-15) ?

How many Joules are equivalent to 75 Calories?

How do you balance nuclear equations?

Ice melting, water boiling, lighting a match, grape juice freezing. Which statement describes evidence of a chemical reaction

How do the relative concentrations of hydronium ions and hydroxide ions compare in acidic solution?

Give the name of the orange metal visable after one week