Chemistry, 03.09.2019 23:20, marcucciisabella
What combination of substances will give a buffered solution that has a ph of 5.05? (assume each pair of substances is dissolved in 5.0 l of water.) (kb for nh3 = 1.8 *10^–5; kb for c5h5n = 1.7 * 10^–9)
a) 1.0 mole nh3 and 1.5 mole nh4cl
b) 1.5 mole nh3 and 1.0 mole nh4cl
c) 1.0 mole c5h5n and 1.5 mole c5h5nhcl
d) 1.5 mole c5h5n and 1.0 mole c5h5nhcl
e) none of these
Answers: 2
Chemistry, 22.06.2019 05:00, foreignking02
1)each group 16 element has how many valence electrons? ( )4 ( )6 ( )8 ( )16 2)how many dots appear in the dot structure for calcium ion, ca2+? ( )zero ( )one ( )two ( )eight 3) which of the following atoms forms a cation to obtain an octet of outer shell electrons? ( )magnesium ( )oxygen ( )fluorine ( )helium 4) an al3+ ion contains 13 protons and 10 electrons. ( )true ( )false 5) valence and non-valence electrons are represented in lewis dot structures. ( )true ( )false
Answers: 3
Chemistry, 22.06.2019 08:00, danielhall
Identify a strong intermolecular force of attraction between an alcohol
Answers: 1
What combination of substances will give a buffered solution that has a ph of 5.05? (assume each pa...
History, 23.05.2020 00:58
Physics, 23.05.2020 00:58