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A steel clyinder contains 128 grams of Oxygen at 25 degrees C and a pressure of 1000 torr. At STP 1 mol of gas occupies 22.4 L What is the volume in liters of the oxygen gas in the cylinder?
A student is required to generate 90.0 mL of carbon dioxide at 750 mm Hg and 21C using potassium hydrogen carbonate and HCl. What is the mass of the potassium hydrogen carbonate needed?
How many grams of KO2 are needed to react completely with 7.328 g of CO2.
When the equation above is balanced and all coefficients are reduced to their lowest whole-number terms, the coefficient for O2
It takes 47.0 J to raise the temperature of an 9.00 g piece of unknown metal from 13.0rm ^circ C to 25.0^circ{C}. What is the specific heat for the metal?
If the standard silver half-reaction potential is set to .80V, calculate the potential for the zinc half-reaction. Write the net ionic equation for the reaction that occurs in this voltaic cell.
To obtain the same antifreeze protection requires 76 g of propylene glycol to replace each 62 g of ethylene glycol. Calculate the mass of propylene glycol required to replace
a chemical reaction produces 653,550 kJ of energy as heat in 142.3 mins. Calculate the rate of energy transfer in kilojoules per minute.
What products would expect from acid-catalyzed hydration of the following alkenes?
Brass is a copper and zinc alloy containing 31.8% zinc by mass and having a density of 8.73 {\rm \frac{g}{cm^3}}. A fitting composed of common brass has a total volume of 335.6 {\rm cm^3}
A 10.0 balloon contains gas at a pressure of 640 torr. What is the new pressure of the gas at the 22.0 liters volumes if there is no change in temperature.
A sample of gas is collected over water at 14 degrees Celsius. The pressure of the resultant mixture is 113.0 kPa. What is the pressure exerted by the hydrogen alone?
Given: 2 NH3(g)N2(g) + 3H2(g); H = + 91.8 kJ/mol rxn 1. (1) What is qp value for one mol rxn.? 2. (1) Is this exo- or endothermic? 3. (1) Which element is reduced? 4. (2) What is enthalpy change per mol NH3?
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