Must new substances be formed when you observe a chemical property? explain

If you have a yellow light bulb and a blue one, which emits light of higher frequency? a. yellow b. blue c. all visible light is the same frequency d. it depends upon how bright the light is

The molality of calcium chloride (CaCl2) in an aqueous solution is 2.46 m. What is mole fraction of the solute?

A fossilized leaf contains 24% of its normal amount of carbon 14. how old is the fossil (to the nearest year) ? use 5600 years as the half-life of carbon 14.

What is a description of a isotonic for a substance?

The melting of wax is a physical change, yet the burning of wax is a chemical change. what is the essential difference between the physical change and the chemical change of wax in a burning candle? A.

Which of the following is the result of the process that binds many amino acids on to another? a. protein b. allele c. dna d. rna

What does the electron transport chain do to the concentration of hydrogen ions (protons) ?

What is the cation name for alcl3?

Moles of hydrogen gas (14) 0.00336 mol 0.00481 mol Moles of hydrogen per g sample (n*,) mol/g mol/g

A hurricane and a typhoon are the same thing true or false?