- How many moles of ions are in a solution of 7.4 moles FeCI3 in 500 mL water?

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What is the partial pressure of N2 in a mixture of N2 and O2 having a total pressure of 1075 torr if the partial pressure of O2 is 720 torr? If 5sinθ = 3 determine the value of:
1. cos (θ-360)
2. Tan (squared)θ
3. Sin θ x cos θ (all divided by cos (squared θ)? If you started with 3.60g of Copper and reacted it with an excess of nitric acid what mass of copper hydroxide would you expect to recover? How to test Petrol in blood? What town is this prefix number for 869 ?