Copper (ii) sulfate pentahydrate, cuso4 x 5h20 is heated in an open crucible to remove the water. (a) diagram the lab set up clearly labelling the key chemicals and materials needed. (b) the initial mass of the sample is 8.00 g and after heating the new mass is 6.50 g. based on this data is the compound completely dried or is additional heating required? provide evidence including calculations and written reasoning for credit.

you need to take a look at the periodic system in order to sort these elements into pairs that would most likely exhibit similar chemical properties. first, you need to find elements that are found in the same group (groups are vertical in the periodic system), and then to see whether they have the same valence number. if they meet these criteria, they will have similar properties.

the first pair: ne (neon) and kr (krypton), are noble gases found in group 8

the second pair: li (lithium) and k (potassium), found in group 1

the third pair: s (sulfur) and te (tellurium), found in group 6

b.

the accuracy of the data.