Ice melting, water boiling, lighting a match, grape juice freezing. Which statement describes evidence of a chemical reaction

If you feed 100 kg of N2 gas and 100 kg of H2 gas into a reactor. What is the excess reactant?

What is the MOST likely reason for including information about the Kansas-Nebraska Act? To show the law that formed the idea behind the Missouri Compromise to show the future problems caused by the Missouri Compromise to show the Missouri Compromise

How many molecules of liquid ethanol are in 1.00 mL of ethanol, given its density is 0.789 g/mL?

What will for if sodium give away one electron?

A 19.3-g mixture of oxygen and argon is found to occupy a volume of 16.2 l when measured at 675.9 mmhg and 43.4oc. what is the partial pressure of oxygen in this mixture?

Which of the following are chemicals? A. clothing B. food C. fuels D. all of the above

How many valence electrons are in atom of sulfur?

My sister needs this answered! Donald is creating an experiment to determine if fertilizer affects plant color. He makes this statement: "If each plant receives a different amount of fertilizer, then the plant's color intensity will change.

What would happen to life if earth were in a different location within the solar system

Substance that undergoes a change in a chemical reaction is a. a product c. a reactant. b. a chemical. d. an enzyme.