Table 3 shows the percentages of the gases in the atmosphere of Titan Table 3
Gas
Percentage of gas in
atmosphere (%)
984
Nitrogen
Methane
Other gases
02
08. Some scientists think that living organisms could have evolved on Titan
Explain why these organisms could not have evolved in the same way that life is
thought to have evolved on Earth
Uso Table 3
[3 marks)
|
08
2 Saturn has other moons.
The other moons of Salum have no atmosphere
Titan is warmer than the other moons of Satum because its atmosphere contains the
greenhouse gas methane
Explain how this groenhouse gas koops Titan warmer than the other moons of Satum
[3 marks)

given:

mass of na = 115 g

excess cl2

to determine:

mass of nacl produced

explanation:

given reaction is-

2na(s) + cl2(g) → 2nacl(s)

since cl2 is in excess, na will be the limiting reagent

as per the reaction stoichiometry na: nacl = 1: 1

i.e. moles of na reacted = moles of nacl formed

now, # moles of na = mass of na/atomic mass

                                  = 115 g/23 g.mol-1 = 5 moles

therefore, moles of nacl = 5

molar mass of nacl = 58 g/mol

mass of nacl = 5 moles * 58 g.mol-1 = 290 g

ans: amount of nacl produced = 290 g

a). in this case, dh> 0 and sd> 0. if t becomes larger, the term "-tds" will become more negative. at some point, it is possible that -dts will be more negative than the dh is positive, and the reaction will become spontaneous. this is probably the correct answer, but you should look at all of the other possibilities and make sure of that.