What is an astronomical unit

A) A measurement of the length for the universe

B) The measurement from Mars to the sun

C) A measurement for the diameter of the sun

D) The measurement of the Milky Way galaxy

An ion from a given element has 82 protons and 80 electrons. what is the charge on the ion? what is the name of the element? what is the symbol for the ion?

Why can we sometimes hear noises in the stomach during digestion?

Complete the chart. atomic number: 10. 1s 2s 2p 3s 3p 4s 3d 4p 5s

Properties of noble gases

How many moles of cacl2 are in 250 ml of a 3.0 m of cacl2 solution?

All the following are characteristic properties of phosphorus. Which one is a chemical property? (a) When exposed to air, white phos - phorus will burn spontaneously, but red phosphorus will not. (b) Red phosphorus and white phos - phorus are solids.

What are the monomers of proteins called

What type of fermentation occurs in yeast?

How much energy is required to vaporize 0.5kg of water?

Can u give me uses of sodium