Which change can be easily be reversed? question 23 options: both a physical and chemical change chemical change physical change neither a physical or chemical change?

The periodic table lists two main numbers for each element. the atomic number is an integer that equals the number of protons. the number of neutrons is not given in the periodic table because it will vary with different isotopes.

What is the correct formula for chromium (3) oxide

How do carrier proteins recognize substances to transport in active transport? a. They will allow any substance to pass. c. They have a pore that only the substance will fit through. b. They have a specific binding site for the substance. d.

Some of the enzymes that oxidize sugars to yield useable cellular energy (for example, ATP) are regulated by phosphorylation.

Which will be true for any actual or potential nucleophilic substitution reaction?

Which would not be associated with stable atmospheric conditions afternoon thunder showers is the answer

Which is not a characteristic of a compound? It is a mixture of elements. It has properties that differ from its component elements. It has a fixed proportion of elements.

Can you think of other possible ways scientists can determine what climate was like in the past besides studying ice cores?

Which sub-layer thins out into space, where there is no air

Complete and balance the molecular equation, including phases, for the reaction of aqueous ammonium bromide, nh4br, and aqueous lead (ii) acetate, pb (c2h3o2) 2.