Give the chemical formula for (a) chlorite ion, (b) chloride ion, (c) chlorate ion, (d) perchlorate ion, (e) hypochlorite ion. The cost of constructing an 8000 ft2 warehouse was $400,000. The ENR construction cost index was 6770 at that time. The cost of constructing a similar building using an ENR index of 9088 is closest to: