(a)[3]
Describe three differences between Saturn’s atmosphere and Earth’s atmosphere.
(b(i))[1]
Use the information to suggest why the layer of liquid hydrogen in Saturn rests on top of the liquid helium.
(b(ii))[2]
What state is hydrogen in at -250 ^{\circ}C? Explain your answer.
(c(i))[2]
Describe a test for ammonia. Include the test and the result.
(c(ii))[2]
Complete the diagram to show the electron arrangement in a molecule of ammonia and the symbols of the atoms present. Show outer electrons only.
(d)[2]
Calculate the relative molecular mass of ammonium hydrosulfide, $\text{NH}_4\text{SH}$. Use your Periodic Table to help you.
(e(i))[1]
Name another greenhouse gas present in the Earth’s atmosphere.
(e(ii))[1]
Explain why.