Chromium reacts with oxygen gas to form chromium(III) oxide. In the balanced chemical equation for this change, what are the lowest, whole number coefficients? Match the number to the species.

How hot is the suns corona? (integrated science)

Solutions of sodium carbonate and silver nitrate react to form solid silver carbonate and a solution of sodium nitrate. a solution containing 3.50 g of sodium carbonate is mixed with one containing 5.00 g of silver nitrate. how many grams of sodium carbonate, silver nitrate, silver carbonate, and sodium nitrate are present after the reaction is complete?

Avariable that is not being directly tested during an experiment should be