What happened to the moon and earth if the sun did not exist

Which statement about nitrogen atoms is false and why? They all have 7 protons; they all have 7 neutrons; they have an atomic mass equal to the number of protons and neutrons; nitrogen has an atomic number of 7.

A hamster weighs less then a (n) ?

A k atom differs from a k ion in that the k atom has one

One of the components of natural crude oil and coal deposits is benzo[a]pyrene, a compound with a molecular mass of about 252.3 amu, containing only carbon and hydrogen. A 3.649 mg sample of benzo[a]pyrene burns to give 12.73 mg of CO2.

What will happened to the rock cycle without the erosion

10) A screwdriver has the density of 5.5 grams per cubic centimeter. It also has the mass of 2.3 grams. What is the screwdriver's volume?

A chemist weighed out 20.7 g of sodium. Calculate the number of moles of sodium she weighed out

If 1.00 mol of argon is placed in a 0.500-L container at 20.0 ∘C, what is the difference between the ideal pressure (as predicted by the ideal gas law) and the real pressure (as predicted by the van der Waals equation) ? For argon, a=1.

Part 2: Finding Speed and Height Using Energy Directions: Use the KE and GPE equations to solve for speed or height depending on the situation. 1. A 1,000-kg car has 50,000 joules of kinetic energy. What is its speed? 2.

Why is conductivity be the best test to find a metal, non-metal or metalloid?