Is rust forming on metal a chemical or physical change

A weather balloon calibrated at 0.00 °C to have a volume of 20.0 L has what volume at - 40.0 °C assuming pressure is held constant?

What assumption is made concerning the reaction of magnesium with 2 m hcl?

How many grams of NH4Cl will be needed to make a 1L solution with a concentration of 4.5M?

What are the 4 indicators that a chemical reaction has taken place? what are they

What is the ka reaction of hcn? the ka of hcn is 6.2 à - 10-10. what is kb value for cnâ€" at 25°c?

What does the chemical formula C3H2O, tell about a molecule of the compound it represents?

No two different elements will have the atomic number.-

Which two scenarios illustrate the relationship between pressure and volume as described by Boyle's law? 1. The pressure in a closed bottle decreases when the bottle is squeezed. 2.

0.210 mol of octane is allowed to react with 0.760 mol of oxygen. which is the limiting reactant?

The national drug code number (NDC) of the drug is included in this section of a drug monograph