What laboratory activities involve chemical changes

What are energy sublevels? (A) multiple energy levels of any magnitude within an energy level (B) multiple orbitals of specific magnitude within an energy level (C) only those energy levels that overlap others (D) electrons whose energy has dropped

Assume that you have a mixture of aluminum chloride and barium sulfate. aluminum chloride is soluble in water, but barium sulfate is not.

What is occurring in the following reaction? H2 + Cl2 → 2HCl A: Cl2 is being oxidized. B: H2 is gaining two electrons. C: Cl2 is acting as an oxidizing agent. D: H2 is being reduced.

Why would a patient need to be in prone position?

Alkane is obtained from the catalytic hydrogenation of both alkene A and alkene B. The heat of hydrogenation of alkene A is 29.8 kcal/mol, and the heat of hydrogenation of alkene B is 31.4 kcal/mol.

If the mass of a material is 76 grams and the volume of the material is 16 cm3, what would the density of the material be? g/cm3

Calculate the specific heat of a metallic element if 50.0 g of the metal need 314 joules of heat energy to raise the temperature from 25°C to 50°C.

State the relationship between the number of electrons in a carbon-nitrogen bond and carbon-nitrogen bond energy

What are the characteristics of bones?

If 294 grams of FeS2 is allowed ti react with 176 grams of O2 according to the following equation how many grams of Fe2O3 are produced? FeS2 + O2 = Fe2O3 + SO2