1. h2 + cl2 → hcl (need to balance equation) how many grams of hcl can be produced if 7.25 g of cl2 is reacted with an unlimited supply of h2?

H2 + CL2 gives 2HCL

71grams of cl2 gives 36 gram

1 grams of cl2 gives 36/71 gram of HCL

7.25 grams of cl2 gives 36/71*7.25 gram of HCL

ans;3.67 grams

- lead + phosphoric acid = hydrogen + lead(ii) phosphate

practical process described pest part of scientific investigation.

because practical knowledge is powerful then therotical knowledge.