Which of the following reactions is associated with the definition of K_b? a) Zn(OH_2)_6^2+ [Zn(OH_2)_5OH]^+ + H^+
b) CN^- + H^+ HCN
c) F^- + H_2O HF + OH^-
d) Cr^3+ + 6H_2O Cr(OH_2)_6^3+
e) none of these

Which sentence best describes the formation of igneous rock? a- lava on the surface dries up and makes arock b_melted rocks cools and forms crystals c_rocks under tremendous heat and pressure d_magma is melted rock underground

If i add water to oil what will happen

In france, grapes are 1.95 euros per kilogram. what is the cost of grapes, in dollars per pound, if the exchange rate is 1.14 dollars/euro? (2.6)