2.

The number of protons in one atom of an element determines the atom's

., and the number of electrons determines

of and element.

to the number of

What is the cause of farsightedness? The cornea is irregular. The cornea is opaque. The eyeball is shortened. The eyeball is elongated.

What is difference between tempering and aging?

Calculate the vapor pressure of water above a solution prepared by dissolving 28.5 g of glycerin (c3h8o3) in 135 g of water at 343 k. (the vapor pressure of water at 343 k is 233.7 torr.)

Which is a characteristic of nuclear fusion but NOT nuclear fission? a. releases large amounts of energy b. is the energy source of stars c. is used in electric power plants d. requires little energy to occur

The air exhaled from the lungs of a smoker has a concentration of 24 ppm CO. Express the concentration as a percent.

What is the name of the binary compound N2P3

Urbanization is the cause of "urban heat island" a condition that could be described as

What is the mass number of an atom which is made up of 27 protons, 33 neutrons and 27 electrons?

If you are trying to reduce echoes in a room, what should you add to the room?

The molar mass of iron (Fe) is 55.8 g/mol. what is the mass in grams of 2.25 moles of iron?