9. Sodium sulfate + barium nitrate → sodium nitrate + barium sulfate 2 Nal 131 Na₂SO4 + Ba(NO3)2 → NaNO3 1007 1 Bal 2N1 10. Sodium metal + chlorine gas sodium chloride. Na + Cl₂ → NaCl 11. Diphosphorus pentoxide → phosphorus + oxygen Mg P₂O5 F + AIPO4 P + 0₂ + 12. magnesium metal + aluminum phosphate → magnesium phosphate + aluminum metal BaSO4 Mg3(PO4)2 Al

4-16. Zinc is an essential micronutrient in pet food, but is toxic if present in excess. Do the Zn concentrations (mg/g) for the five cat foods and two dog foods determined by two methods differ significantly at the 95% confidence level? Cat 1 Cat 2 Cat 3 Cat 4 Cat 5 Dog 1 Dog 2 Old method: bris 8 Я 84.9 73.5 173.0 62.7 154.0 80.1 185.0 New faster method: 86.2 81.8 186.0 73.4 138.0 72.5 203.0 SO Souza, S. S. L. Costa, R. G. O. Araujo, C. A. Cats and

Nothing is graded. They’re homework questions that I started.

Curved arrows are used to illustrate the flow of electrons. Follow the curved arrows and draw the missing intermediates and product of this hydrohalogenation reaction. Include all lone pairs. Select to Draw H I I I I H3O+ H₂O > H.CO H 1,2-hydride shift Drawing H