Which substance is a physical reaction to copper

Copper rusting or copper depending due to force

28.0 grams of sodium are how many moles?

If the first set of reactants is NH4OH and KAl (SO4) 2 and the second set of reactants is MgSO4 and NH4OH, is either reaction considered a synthesis reaction as labeled in the laboratory? Why or why not?

Does being creative in doing science mean that a science should make up? Why?

A solution is prepared by mixing 150.0 ml of 1.00*10^-2 m mg (no3) 2 and 250.0 ml of 1.00*10^-1m naf calculate the concentrations of mg2 + and f at equilibrium with solid mgf2 ksp = 6.4*10^-9

A sample of iron metal absorbs 4.56j of heat, upon which temperature of the sample increased from 29 degrees c to 36 degrees c. Which if the following is the mass of the sample? cs of iron is 0.46j/g degrees.

What do you use to measure mass

A salt shaker filled with 17.0g sodium chloride contain how many moles?

When a radioactive decay occurs what is released? A. Only protons and neutrons B. Only electrons C. Protons/Neutrons, beta particle, gamma ray D. Only gamma rays

How is the process of scientific inquiry and the design process similar and how they are different.

Provide an explanation at the subatomic level to explain why different colors are observed for different metal salts.