How many pairs of electrons does the carbon atom share with each hydrogen atom in the chemical compound methane, which has the formula CH4?

The statue of liberty is made of copper. use your investigation resulsts to explain why copper is a better material for a statue than magnesium or iorn

Which change will decrease the number of effective collisions during a chemical reaction? A. adding a catalyst B. increasing the surface area C. decreasing the temperature D. increasing the reactant concentrations E.

A reaction will be spontaneous at all temperatures if the reaction? A. has a positive value for free energy change. B. is exothermic and accompanied by an increase in disorder. C. is endothermic and accompanied by a decrease in disorder. D.

Which of the following equations represents a double-displacement reaction? A. FeS (s) + 2HCl (aq) ® H2S (g) + FeCl2 (aq) B. 2Sb (s) + 3I2 (g) ® 2SbI3 (s) C. Zn (s) + H2SO4 (aq) ® ZnSO4 (aq) + H2 (g) D. 2HgO (s) ® 2Hg (l) + O2 (g)

What is the ETD and CID in mass spectrometry? What are the differences between ETD and CID?

What determines the horizontal arrangement of the periodic table?

A 55.3 g sample of lead heated and then quenched in a 175g sample of water. During the quenching reaction the temperature of the water increases from room temperature, 25.0 °C, to 42.6 °C.

What conclusion can you draw from this experiment about the components of the black ink

How does the size of ions affect the conductivity of a solution?

How to write complete ionic and net ionic equations?