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1- 2.00 L of NO(g) at 1.00 atm and 25°C is reacted with 1.00 L of H2(g) at 2.00 atm and 25°C according to the following unbalanced equation. NO(g) + H2(g) → N2(g) + H2O(g) Which, if either, is the limiting reactant? 2- A gas that occupies 13.0 L at 1 atm and 25 °C is placed in a hyberbarric chamber where the pressure is increased to 2.5 atm at 25 °C. What volume does the gas occupy the chamber? 3- The Lewis structure for which of the following contains the least number of (total) lone pairs The Lewis structure for which of the following contains the least number of (total) lone pairs BF3 CH4 CO2 SH2 4- What is the difference between a qualitative and quantitative observation? Give an example of each. 5- Tin (II) fluoride is added to some dental products to help prevent cavities. Manufacturers have to make the tin(II) fluoride first, though,

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