Which expression represents the percent by mass of nitrogen
Which expression represents the percent by mass of nitrogen in NH4NO3? A) 14 g N/80 g NH NO 100% B) 28 g N/80 g NH NO 100% C) 80 g NH NO /14 g N 100% D) 80 g NH NO /28 g N 100%
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Water enters a pipe at 100 psig and 70 degrees F. The density of water under these conditions is 62.3 lbm/ft^3. The pipe has an inside diameter of 4.5 inches. The mass flow rate of the water is measured to be 7500 lbm/hr.
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Which expression represents the percent by mass of nitrogen in NH4NO3. A) 14 g N/80 g NH NO 100% B) 28 g N/80 g NH NO 100% C) 80 g NH NO /14 g N 100% D) 80 g NH NO /28 g N 100%
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When 2.45g of an unknown weak acid (HA) with a molar mass of 85.0 g/mol is dissolved in 250.0 g of water, the freezing point of the resulting solution is -0.255 C. Calculate Ka for the unknown weak acid.
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