Which of the following is an incorrect interpretation of the balanced equation? 2s(s)3O2(g)>2SO3(g)
A. 2 atoms S+3 molecules O2>molecules SO3
B. 2 g s + 3 g 2> 2g SO3
C. 2 mol S+3 mol O2>2molSO3
D. none of the above

Calculate the number of molecules present in 0.750 mol of mgo.

Consider a culture medium on which only gram-positive organisms such as staphylococcus aureus colonies can grow due to an elevated nacl level. a yellow halo surrounds the growth, indicating the bacterium fermented a sugar in the medium, decreasing the ph as a result and changing the color of a ph indicator chemical. this type of medium would be referred to as a differential and enrichment culture.

The equation below shows the reaction of zinc with hydrochloric acid (hcl). zn (s) + 2 hcl (aq) —> zncl2 (aq) + h2 (g) what will happen if the concentration of hcl is decreased? a. more zncl2 will be produced. b. the reaction rate will slow down. c. the hydrochloric acid will become more acidic. d. the reaction will produce water instead of hydrogen gas.