What mass of NH3 can be made from 1221g of H2 and excess N2

How is the structure around a given atom related to repulsion between valence electron pairs on the atom involved

Define ionize: the process of becoming an ion a polar covalent molecule forming ions both of the above none of the above

Circle three objects. Describe two forms of energy each object has. Force and Energy page 118.

If the electron configuration of an element is 1s22s22p63s23p5, the element is phosphorus. chlorine. iron. bromine.

Which statement is the best description of a chemical bond? A. A chemical bond holds atoms together. B. A chemical bond connects 2 different molecules. C. A chemical bond identifies atoms in a molecule. D. A chemical bond turns molecules into atoms.

How do compounds affect an atom's stability

You need to make 10 mL of 2 mg/ml solution of protein and you have 25 mg/mL solution. How much protein solution and water do you need to mix in order to make the required solution?

The definition of volume is? a) width*height b) the space occupied by mass c) the space occupied by a liquid d) the mass of liquid required to fill a container

What is the empirical formula of a substance that is 53.5% C, 15.5% H, 31.1% N?

What is the lowest layer of the atmosphere and what is its highest altitude?