Describe the electron arrangement for each of the following elements. You can draw the arrangement or list the number of electrons in each energy level.

a. Oxygen

b. Magnesium

c. Chlorine

If hydrochloric acid (HCl) reacts with the base lithium hydroxide (LiOH), what are the products of the reaction? Write a chemical equation for the reaction.

Is coal a renewable resource

The chemical reaction of oxygen with other substances is called A. erosion. B. acidification. C. oxidation. D. exfoliation.

Carmen lives on a farm in an area far away from the city and surround by forests. New families are starting to move into the area, and several of them are also farmers. Which form of land use is probably least important to Carmen and her family?

If an object has a mass of 20 kg and an acceleration of 15 m/s what would be the amount of force in Newton's acting on the object

How many grams of silver chloride (AgCl) can be produced if you start with 12.5 grams of barium chloride (BaCl2) ? 2AgNO3 + BaCl2 = = > 2AgCl + Ba (NO3) 2

Chlorine gas can be prepared in the laboratory by the reaction of hydrochloric acid with manganese (IV) oxide. 4 HCl (aq) + MnO 2 (s) ⟶ MnCl 2 (aq) + 2 H 2 O (l) + Cl 2 (g) 4HCl (aq) + MnO2 (s) ⟶MnCl2 (aq) + 2H2O (l) + Cl2 (g) A sample of 43.

Calculate how many moles of glycine are in a 160.0-g sample of glycine. express your answer using four significant figures.

Which of the following words correctly describes CO2? Select all that apply A. Its a substance b its a compound c its a element D its a mixture

A certain reaction has an activation energy of 51.64 kj/mol. At what temperature Kelvin will the reaction be 5.50 times faster than it did at 343K?