Which of the following is a redox reaction? A)

MgCO3 → MgO + CO2

B)

Mg(OH)2 + 2HCl → MgCl2 + H2O

C)

CuO + H2SO4 → CuSO4 + H2O

D)

3MnO2 + 4Al → 3Mn + 2Al2O3

Rank substituents in order of their priority when assigning the e or z label to an alkene. i, ch2i , h, ch2ch2cl, f

Use the periodic table to determine how many grams of oxygen would be required to react completely with 859.0 g c2h2

When can a hypothesis be elevated to the status of a theory? a) when it is validated by an experiment b) when data gathered from an experiment precisely fits predictions c) when it can be proved to be true d) when it meets the test of repeated experimentation