Which of these equations represent reactions that could be used in constructing an electrochemical c Check all that apply
CH. +202 C02 +2H,0
Cr + Cu? → Cr?++ Cu
2 Ag*+Fe + 2Ag +Fe2
CI+Ag → AgCI
NH, *H* NH,
RETRY

Enough of a monoprotic weak acid is dissolved in water to produce a 0.0172 m solution. if the ph of the resulting solution is 2.39 at 20 °c, determine the pka for the acid.

In any energy conversion, some of the energy is lost to the environment as question 5 options: electrical energy potential energy sound energy thermal energy

Which of the following statements about hybrid orbitals is or are true? choose all that apply. choose all that apply. under sp2 hybridization, the large lobes point to the vertices of an equilateral triangle. after an atom undergoes sp hybridization there is one unhybridized p orbital on the atom. the angle between the large lobes of sp3 hybrids is 109.5∘