A solution is made by dissolving KBr in water. If 22.1 grams of KBr are dissolved and the solution has a percent by mass concentration of 2.65% what mass of water was used to make the solution?

In the reaction between a crushed antacid tablet and vinegar what gas is emitted

How does the presence of oxygen affect the chemical pathways used to extract energy from glucose?

Which answer tells the reason the earth’s climate is getting warmer? too many animals are becoming extinct. large glaciers are melting in antarctica. the earth is moving closer to the sun. driving cars gives off gases that trap heat in the atmosphere.