Recent content by rpatel

basically this is a 2 mark question. so really you want to get straight to the point. this isn't a long answers. just a short 2 sentence answer. which will earn you 2 marks. regards

Why is the first ionisation energy of chlorine is higher than that of sulphur ? i am having trouble with the questions above please help thanks :smile:

thank you. :smile:

Calculate the percentage by mass of the elements shown in the following compounds A) Br in MgBr[SIZE="1"]2 b) O in Ca(NO[SIZE="1"]3)[SIZE="1"]2 c) N in NH[SIZE="1"]4NO[SIZE="1"]3 any help is appreichated thanks regards

ok i have redone my calculations . for part a) i calculated the possibilities for outcomes. spinner 1 probality of it landing on A is 2/5 and the probality of it landing on B is 2/5 also. spinner 2 probality of it landing on A is 3/5 and the probality of it landing on B is 1/5. it...

i tried these questions but i get odd answers. like for the first bit i got 2. which i dnt think is right? can anyone verify the answers.

i have having with the question i have attached. can someone please help me? :smile: thank you.