Given the reaction:
NH3(g) + H2O() NH4+(aq) + OH–(aq)

Which is the conjugate acid-base pair?

A) H2O() and NH4+(aq)

B) H2O() and NH3(g)

C) NH3(g) and OH–(aq)

D) NH3(g) and NH4+(aq)

1. calculate the approximate enthalpy of the reaction in joules. estimate that 1.0 ml of vinegar has the same thermal mass as 1.0 ml of water. iqnore the thermal mass of th sodium bicarbonate. note: it takes about 4.2 joules () to change 1.0 gram (1.0ml) of water 1.0 c

Classify this reaction: 2al+n2-> aln.

Which theory was contradicted by experiments with the photoelectric effect? light spreads out after it passes through a small opening. as soon as light strikes metal, electrons will be ejected. visible light, regardless of color, will cause the ejection of electrons when striking metal. the kinetic energy of ejected electrons depends on the frequency of light that strikes the metal.