What is the conjugate acid of HSO4- in the reaction below? H2 SO4 (aq) + H2 O(l) rightleftharpoons H3 O+(aq) + HSO 4 -(aq) A. SO 4 ^ 2-
B. H 2 O
C. H 3 O^ +
D. H 2 SO 4

When H2O acts as a base, it gains one H, which forms its conjugate acid, H30. ... Conjugate acid-base pairs: H2SO4/HSO4 andH3O+/H2O ... CO32-(aq) + H2O(1) 2 HCO3 (aq) + OH(aq).

a: 45.9 meters

b: 4.29 seconds

step-by-step explanation:

a: h(t)=1/2(-9.8)(3)^2+0(3)+90

h(t)=-4.9(3)^2+90

h(t)=-44.1+90

h(t)=45.9 meters

b: 0=1/2(-9.8)(t^2)+0t+90

0=-4.9t^2+90

-90=-4.9t^2

18.37=t^2

t=4.29 seconds

in the second question, the numbers aren't exact, but they're a close approximation.

c (diamond),

sio2 (quartz)