an atom of element Y has an electronic structure of 2.8.5. Would the element Y be a metal or non-metal? Explain your answer

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