Copper (ii) oxide reacts with carbon to form copper metal and carbon dioxide. if 365 grams of copper (ii) oxide were reacted with excess carbon, how much carbon dioxide would be produced?
a. 101 g
b. 0.349 g
c. 289 g
d. 56 g

Calculate the h3o+ concentration in a solution of acetic acid if the concentration of molecular acetic acid present at equilibrium is 9.97x10^-3 m and k for the dissociation is 1.86x10^-5. ch3cooh(aq)+h2o(> h3o^+(aq)+ch3coo^-(aq)

The diagram shows the structures of horse and cat forelimbs. what does the diagram suggest about the evolutionary relationship between these two mammals? a. they have homologous structures, indicating a common ancestor. b. they have analogous structures, indicating a common ancestor. c. they have homologous structures, indicating that they do not have a common ancestor. d. they have analogous structures, indicating that they do not have a common ancestor.

Which position represents spring in the southern hemisphere? a) b) c) d)