Now molecules: molecules of H2 + molecules of O2 → molecules of H2O

What is the most important role that water plays for living organisms A. all organisms need water to stay clean B. all organisms need water to transport water into their cells C. all organisms need water as an energy source D.

Which of these substances are elements? more than 1 answer 1. silicon 2. lead 3. silicone 4. water 5. iodine 6. quartz

As a chemical engineer, you have the option of operating a reversible flow compressor either adiabati - cally or isothermally.

What is a mole and why do we use it

Which best describes the relationship between heat, internal energy, and thermal energy? O Internal energy is heat that flows, and heat is the part of thermal energy that can be transferred.

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.