What parts of an atom make up almost all the mass of the atom?

Which of the following covalent bonds is the most polar? H-F H-C H-N H-H

What is the temperature of 0.80 mol of a gas stored in a 275 mL cylinder at 175 kPa?

Calculate the number of grams in magnesium present in 25 g of magnesium phosphate

What type of bond is NH3 Ionic, covalent, or metallic

What is characteristic of a mineral? A. It must be amorphous and have un indefinite chemical composition. B. Its must be amorphous and have un definite chemical composition. C. It must be crystalline and have un indefinite chemical composition d.

What is the similarity between a meander and a gully?

In the ground state, which noble gas has atom with the same electrons configuration as a magnesium ion

What is the radioactivity of the sample of sodium - 24 after 30h?

If a balloon is heated, what happens to the pressure of the air inside the balloon if the volume remains constant? It increases. It stays the same. It decreases.

If heat is released by a chemical system, an equal amount of heat will be a) absorbed by the surroundings b) released by the surrounding c) absorbed by the universe d) released by the universe