What type of chemical reaction is

4Fe + 30, - --> 2Fe203

Suppose you have a solid that looks like gold but you believe it to be fool's gold. The mass of the solid is 23.5 grams. When the solid is lowered into a graduated cylinder the water level rises from 47.5 to 52.2 mL. Is the simple fool's gold

Adding lime to wastewater causes heavy metals to settle to the bottom of the water tank. His chemical process results in the formation of a A. Gas B. precipitate C. reactant

The theory general relativity was discovered by who

How is the thermal energy of a substance related to its physical state

Which frequency has more energy? (high frequency or low frequency)

The most important reason why solid sodium hydroxide is not used as a primary standard is

plate a and plate b are both continental plates. what is ghe most likely result if the two plates collide?

According to the second law of thermodynamics, the entropy of any system always increases. According to the second law of thermodynamics, the entropy of any system always increases. True False

If the density of Cu is 8.96g/cm cubed, what is the volume of 28kg of Cu?

A piece of iron can change in different ways. How is iron bending different from iron rusting?