What best describes the sun?

A huge ball of fire

A mass of solid matter

Molten matter held together by gravity

A mass of protons and magnetic

What is a particle diagram to illustrate the composition of air

What are the requirements for two atoms to be isotopes of each other?

Explain how you figure out the number of neutrons in Tellurium-128.

Ultraviolet rays from the sun can cause a. serious burning of the skin b. damage to the eyes c. both serious burning of the skin and damage to the eyes d. neither serious burning of the skin nor damage to the eyes

Electrons orbit around the nucleus of atoms in allowed energy states. This is the basis of the theory of which scientist? A. John Dalton B. Niels Bohr C. Albert Einstein

How does the quantity of atp produced as a result of activity by the electron transport chain compare to the quantity produced as a result of glycolysis?

Molybdenum has a molar mass of 95.94g/mol. How many molecules of molybdenum are in 150.0 g of molybdenum

Describe a way that people might be able to solve each envioronmental problem listed below. coal mining can harm habitats and cause pollution.

A sample of methane gas occupies 4.50 gallons at a temperature of 80.0 F. If the pressure is held constant, what will be the volume of the gas at 100. degrees C?

Jack wants to know if it takes longer for warm water to freeze into ice cubes than cold water, so he performed the following experiment. Jack placed 50 mL of water in the refrigerator and allowed it to cool to a temperature of 4°C.