Biologists study the structural adaptations of organisms, which are

The diagram above is a potential energy curve for a reaction which number represents the effects of a catalyst from the reaction

When a sample of gas is cooled, it condenses into a liquid. In which of the following ways do the molecules of the original gas sample compare with the molecules of the liquid? a. The molecules weigh less as a gas than they do as a liquid. b.

An 1.04-L sample of gas at 759 mm Hg pressure expanded until its volume is 2.24 L. What the pressure in the expanded gas sample at constant temperature) ?

Type the half-cell reaction that takes place at the anode for the chromium-silver voltaic cell. Indicate the physical states of atoms and ions using the abbreviation (s), (l), or (g) for solid, liquid, or gas, respectively.

What is the function of a salt bridge in a voltaic cell? A. It provides salt for the reaction B. It prevents the reaction from proceeding to quickly C. It allows for the solutions to mix D. It completes the circuit I think D or B?

Which best describes a spontaneous process as it relates to the second law of thermodynamics? It destroys heat. It requires work. It creates energy. It occurs naturally.

What mass (in mg) does 2.63moles of nickel have?

What does the energy hill represent on an energy diagram? A. The potential energy gained by the products when a reaction happens B. The final amount of potential energy of the products of the reaction C.

Compared to the ideal angle, you would expect the actual angle between the bromine-oxygen bonds to be

Iron is an important element in human body cells. If iron has an atomic number of 26, what does this tell you about this element?