Which one of the following is an example of an acid-base reaction? A. HCI + KOH --> H2O + KCl

B. 2CuS + 302 –>2CuO + 2SO2

C. S8 + 802 —> 8SO2

D. C3H8 + 5O2 —> 3CO2 + 4H2O

Evaluate this exponential expression,8. (2 + 3)2 – 42

The characteristic of two different types of reactions are shown below. reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of and element. which statement is true about the atoms of the elements that participate in the two reactions? a: their identity changes in both reaction a and b. b: their identity changes in reaction a but not b. c: their identity changes in reaction b but not a. d: their identity remains the same.

Structure of the atoms: discovery of the nucleus in 1909i need answering all of these questions