A change in the number of protons or neutrons occurs in which type of reaction?

A: electrochemical reaction

B: thermochemical reaction

C: nuclear reaction

D: chemical reaction

What mass of carbon is present in 0.500 mol of sucrose?

In the 1990's, biologists studied the alligator population in Lake Apopka, Florida. This lake experienced a chemical spill of the pesticide dicofol in 1980, and researchers wanted determine the effects of the pollution on organisms in the area.

Which of these is NOT a benefit of nuclear energy? A) fossils fuels are not required B) does not contribute to global warming C) presence of hazardous radioactive materials D) little carbon emissions released into the air

How many molecules are in 3.5 moles of ethanol

Is yeast the same as baking powder

Which of the following is a chemical property? A.) Ability to burn B.) Mass C.) Density D.) All of the above

What is the density of rock if it has a mass of 25 g?

In a popular classroom demonstration, solid sodium is added to liquid water and reacts to produce hydrogen gas and aqueous sodium hydroxide. part a write a balanced chemical equation for this reaction.

Calculate the vapor pressure lowering on an aqueous solution of glycerin that contains 180g of glycerin and 1000g of water at 25c. The vapor pressure of water at this temperature is 23.8torr.

Why does one Oxygen atom bond with two Hydrogen atoms to form water? Why don't they bond in a different ratio?