De la siguiente reacción H2O + SO3 → H2SO4 ¿qué cantidad de anhidrido se requiere para producir 200g de ácido sulfúrico? A)220 g

B)245 g

C)123 g

D)20

Which of the following statements about acidic water is true? a. acid has no effect on the h,o molecules. b. the solution contains a larger number of oh ions than h,o ions. c. the solution contains a larger number of h,o ions than qh ions. d. the solution contains an equal number of h,o ions and oh ions. none of the above e.

As changes in energy levels of electrons increase, the frequencies of atomic line spectra they emit

Which of the following represents the balanced reduction half-reaction from the redox reaction? (2 points) pb + pd(no3)2 yields pb(no3)2 + pd pb yields pd2+ + e- pd2+ + 2e- yields pd pb + e- yields pb 2 pd2+ + 4 e- yields 2 pd