The amount of sodium-24 in a sample is found to have decreased from 10.0 grams to 1.25 grams in 45 hours. What is the half lite sodium -24?

1. 22.5 hours
2. 11.25 hours
3. 9.0 hours
4. 15.0 hours

Suggest which functional groups are responsible for the reactions with(i) sodium,(ii) bromine water(iii) alkaline aqueous iodine.(3 marks)(iv) suggest structures for x and y.(1 mark)(b) one molecule that has been found in the dust clouds is hydroxyethanal: hoch2cho.name the two functional groups present in this compound.(2 marks)(c) but-1-ene, ch3ch2ch=ch2, is an important compound in the petrochemical industry.some reactions of but-l-ene are given below. in each empty box, draw the structural formulaand write the name of the organic compounds formed.