Answer:
#1- the percentage is 2.77%
#2 - 218.1336g
#3- 7.89%
#4- 63.8489g
#5- 136.1406g
#6- 340.3515g
#7- 2.387238
#8-
Explanation:
Gold
option A
an increase in entropy and a decrease in enthalpy
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1s2 2s2 2p6 3s2 3p6 3d6 4s2