Carbon will burn in sufficient oxygen to produce carbon dioxide. In an experiment 8.40 grams of C reacts with oxygen and 30.80 grams of carbon dioxide is produced. What mass of oxygen reacted with the 8.40 g of C?
Calculate the percentage composition of the carbon dioxide?

Determine the empirical formula of a compound containing 40.6 grams of carbon, 5.1 grams of hydrogen, and 54.2 grams of oxygen. in an experiment, the molar mass of the compound was determined to be 118.084 g/mol. what is the molecular formula of the compound? for both questions, show your work or explain how you determined the formulas by giving specific values used in calculations.

This question is about electrolysis. metal spoons can be coated with silver. this is called electroplating. suggest one reason why spoons are electroplated?

Categorize them by metal, nonmetal, in periodic tableductilenon-ductilemalleableoften gain electrons easilygood conductorpoor conductorcan be liquidselements