What formula stands for boric acid?

A) H3B

B) H3BO3

C) HBr

D) H3PO4

What kind of chemical change do you think occurs when a banana peel turns brown in the open air?

Which of the following does not happen during a chemical change? Mass is gained. New compounds are formed. Old compounds are broken down. Bonds are broken.

Which of the following statements are correct regarding the binding energy?

In the diagram, the arrow shows the movement of electric charges through a wire connected to a battery. What causes the electric charges to flow from one end of the battery to the other?

200.0g of C6H5OH is reacted with 200.0g O2 according to the following reaction: C6H5OH + 7O2 → 6CO2 + 3H2O Identify the limiting reactant. Identify the excess reactant. Determine the theoretical yield of CO2.

Which substance is the oxidizing agent in this reaction? 2CuO+C→2Cu+CO2 Express your answer as a chemical formula.

Why does the light bulbs have to be part of the loop in order for it to be succesful?

Which best describes the transition from gas to liquid? Energy must be removed because particles in liquid move more slowly. Energy must be added because particles in liquid move more quickly.

Calculate the mass of a 0.255-ml sample of a liquid with density 0.660 g/ml.

Which statement correctly describes the interaction between magnetic poles? North and south poles attract each other. North and south poles repel each other. Two north poles will attract each other. Two south poles will attract each other.