What is the number of atoms in 2.0 mol zinc

Liquid butane, C4H10, is stored in cylinders to be used as a fuel. Suppose 35.5 g of butane gas is removed from a cylinder. How much heat must be provided to vaporize this much gas? The heat of vaporization of butane is 21.3 kJ/mol.

Human blood consists of blood groups A, B, and O. However, there is one more blood group, AB, which contains alleles A and B in the same genotype. What is this phenomenon called

All of the following are physical properties of a substance in the in the liquid state except. A) definite volume B) Not easily compressed. C) able to flow D) Definite mass

Which processes moves rock materials across the surface of the Earth?

If the coal is burned in a power plant that uses 2000 tons of coal per day, what mass of calcium oxide is required daily to eliminate the sulfur dioxide? How many grams of calcium sulfite are produced daily by this power plant?

How many valence electrons in Al3+?

What can be done to make an solid solute dissolve faster in a liquid solvent

Why does the water cycle happen fast in some places and slowly in other places?

Why does the mood have phases

According to Arhennius, which of the following is a base? * A. HCl B. HNO3 C. NaCl D. NaOH