Answer:
heat of formation i think
C3H8 -----> 3 CO2 (from equation)
1mol C3H8 ------ 3 mol CO2
2.0 mol C3H8 ---- x mol CO2
x=(2.0 mol C3H8* 3 mol CO2)/1mol C3H8 =6 mol CO2
Answer:
In the 1950s and the early 1960s, thalidomide was used to treat morning sickness during pregnancy. But it was found to cause severe birth defects. Now, decades later, thalidomide is being used to treat a skin condition and cancer. It's being investigated as a treatment for many other disorders.
Answer:
The Inert Pair effect renders Pb(II) as the more stable oxidation state of lead
Explanation:
SnBr4 + PbBr2 ---> SnBr2 + PbBr4
SnBr2 + PbBr4 ---->
The Inert pair effect is mostly observed between group 15-17 in the periodic table. It leads to stability of the lower oxidation state of an element.
The reason for the Inert pair effect is that the s electrons become Inert due to poor shielding of the d and f-electrons. The Inert pair effect is a tendency of the s electrons not to participate in bonding (remain an Inert pair).
Owing to the Inert pair effect, Pb II is more stable than Pb IV