If 220 grams of C3H8 react with 20 grams of O2, how much CO2 can be formed? help plz

When an object falls through the air and encounters air resistance its overall speed will be than if it had not encountered air resistance? (one word answer)

When the chemicals iron sulfide (fes) and hydrochloric acid (hcl) are combined, bubbles appear from the mixture. 1. does the appearance of bubbles indicate a physical or chemical change? 2. why do the bubbles indicate this change? 3. what property is this?

What information does a complete ionic equation give that the balanced equation doesn’t show?