Which 3 elements had complete out shells? (you will probably need to use the periodic table)

How many atoms of hydrogen are there in 3.0kg of ethane

Which of the following species cannot act as a Lewis base? NH2- NH4+ NH3 N3- NH2-

True or false. The kinetic energy of reactant particles has no effect on the reaction rate?

The protein structure that twists like a helix or folds over on itself like a flat sheet Primary Structure Seondary Structure Tertiary Structure Quaternary Structure

A catalyst increases the rate of a chemical reaction by

What is the molarity of solution that contains 5.80 grams of nickel nitrate, ni (no3) 2 in 500. ml?

Hydrogen has three isotopes with mass numbers of 1, 2, and 3 and has an average atomic mass of 1.00794 amu. This information indicates that 1. equal numbers of each isotope are present 2. more isotopes have an atomic mass of 2 or 3 than of 1 3.

Describe the process of how visible light is produced

Which of the following contains both ionic and covalent bonding? CH4 NaCl NH4Cl N2O4 If the formula for a compound is represented by X2Y3 and the charge on the Y ion is - 2, what is the charge in the X ion? +1 +2 +3 +4

Qual e o maior orgao do corpo humano