How do you calculate atomic number

Which theory states that our inner planets are rocky because rocks and metals combine at extreme temperatures, while the outer planets are gaseous because hydrogen compounds condense at colder temperatures? Hubble Doppler Kepler Nebular

Scientific notation of 50500 up to three significant figures

Convert each of the following measures in length 1.1cm to meters

If you wanted to make 12 grams of copper (II) bromide, how many molecules do you need?

If the distance between 2 objects is decreased to one forth of the original distance, how will this decrease change the force of attraction between the objects?

What form of energy provides power for a gas stove? A. nuclear energy B. electrical energy C. chemical energy D. sound energy Can you explain the answer for me?

Calculate the amount of HCN that gives the lethal dose in a small laboratory room measuring 12.0 ft*15.0 ft*8.60ft.

A certain ore is 34.4% nickel by mass. How many kilograms of this ore would need to dig up to have 30.0g of nickel?

Are the chemical reactions that take place when a battery connected endothermic or exothermic

What are 3 properties of carbon?