A certain ion has a charge of 2 + and 27 electrons. which ion is it

What information is presented inside each square of the periodic table?

A student following the procedure described in this module collected the follwing dа ta: 1. Mass Mg, m = 0.0243, initial syringe volume, ml=1.0, final syringe volume, ml = 26.5, barometric pressure, torr = 754, temperature, k = 298.

Chemistry How many water molecules are in 1.9 moles of water? Use 6.022 X 1023 for Avogadro's Number! Use "e-notation" when answering. 6.022 X 1023 would be entered as 6.022e23

An atom has 25 protons, 20 neutrons, and 19 electrons. Which atom is this, What is the atom's mass number?

How was the work of Newlands similar to that of Mendeleev on the periodic table?

Does oxidation cause misfolding of protein

A solution is a homogenous mixture of solute and solvent. There are different types of solutions. A carbonated drink is an example of a solution where the solute is a gas and the solvent is a liquid.

Nitrogen molecules rest with oxygen molecules. Nitrogen monoxide molecules are made. N2 + O2 → 2NO Nitrogen molecules and oxygen molecules react extremely slowly, even at 200°C.

What is the name of an object containing both elements #29 and 30 with element #30 in the center surrounded by element #29?

Check every statement about the use of energy by living things that is true. Plants perform chemical reactions that require energy. Animals can use energy from the sun to produce their own food. Plants receive their energy from water in the soil.