Select the correct answer.

Iron oxide reacts with aluminum to give aluminum oxide and iron. What kind of chemical reaction is this?

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What happens to energy when Sally kicks a soccer ball? Kinetic energy is transformed to chemical energy in muscles. Potential energy is transformed to chemical energy in muscles. Kinetic energy is transferred from the leg to the soccer ball.

What is the stable ion of gallium

The piezoelectric effect, when generating ultrasound waves, involves the conversion of: A. chemical energy to mechanical energy. B. electrical energy to potential energy. C. kinetic energy to electrical energy. D.

A nurse practitioner prepares an injection of promethazine, an antihistamine used to treat allergic rhinitis. If the stock bottle is labeled 30. mg/mL and the order is a dose of 10.0mg, how many milliliters will the nurse draw up in the syringe?

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What is the lowest energy level that contains d orbitals? O A. 4 O B. 1 O c. 3 O D. 2

What is the nature of the Ca-Cl bond in a molecule of calcium chloride (CaCl2) if the electronegativity value of calcium is 1.0 and that of chlorine is 3.167 O A nonpolar covalent B. moderately polar covalent C.

Which statement is true about oxidation and reduction in an electrochemical cell? (1) Both occur at the anode. (2) Both occur at the cathode. (3) Oxidation occurs at the anode and reduction occurs at the cathode.

For a solar eclipse to occur,

How many times does the citric acid cycle occur for each molecule of glucose?