When a soda can is opened and produces a fizzing sound and carbon dioxide bubbles, is it a physical or chemical change?

A reaction mechanism has the following elementary step as the slow step: B2A What is the rate law for this elementary step? O rate = k[B] O rate = k[A] [B]2 O rate = k[A] O rate = k [A] [B] O rate = k[A]2

If you need to find the number of moles of air in a scuba tank filled to a pressure of 22,000 kPa at 295K, and the volume of the tank is 30 L, which equation would you use?

Two of the metallic compounds were used and reacted with neither the acid (HCl), nor the base (NH4OH).

If earth did not rotate what would happen to the global winds and why?

Acetylating agents such as acetic anhydride react preferentially with primary amines, iodoacetate reacts preferentially with sulfhydryl groups, and atp-dependent kinases preferentially add a phosphoryl group to side-chain hydroxyl or phenolic - oh

An ice cube at 0.00 ˚C with a mass of 8.32 g is placed into 55 g of water, initially at 25 ˚C. If no heat is lost to the surroundings, what is the final temperature of the entire water sample after all the ice is melted (report your answer to three

When metals combine with nonmetals the metallic atoms tend to

Which type of bond forms between water molecules? a. strong bond b. hydrogen bond c. covalent bond d. polar bond

Down syndrome is caused by the presence of an extra copy of chromosome 21. how would a karyotype identify a person with down syndrome? a) ID physical characteristics of someone with the disease.

Which expression is a measurement of denisty