How many liters of hydrogen gas at a pressure
When 36.4 g of calcium and 11.1 g of water are reacted according to the following equation: Ca(s) + 2H2O(l) → Ca(OH)2(s) + H2(g) How many liters of hydrogen gas at a pressure of 727 mm Hg and a temperture of 47.8 °C are produced?
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Which one, if any, is in excess and by how much? Also, how many moles of water, H2O, would be produced by the reaction?
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How many molecules of ethanol (C2H5OH) (the alcohol in alcoholic beverages) are present in 165 mL of ethanol? Density of ethanol is 0.789g/cm3
Silver nitrate, AgNO3, reacts with ferric chloride, FeCl3, to give silver chloride, AgCl, and ferric nitrate, Fe(NO3)3. In a particular experiment, it was plannned to mix a solution containing 25.0 g of AgNO3 with another solution containing 45.0
When 36.4 g of calcium and 11.1 g of water are reacted. How many liters of hydrogen gas at a pressure of 727 mm Hg and a temperture of 47.8 °C are produced?
World reserves of chromium are about 800 million tons, and current usage is about 2 million tons per year. if growth in demand for chromium increases exponentially at a constant rate of 2.6 percent per year.
"Isooctane", a fuel used in gasoline engines because it has an antiknock octane rating of 100, has a density of 0.6919 g cm-3. How many pounds would 20.4 gallons of this fuel (a typical full tank) weigh? 1 gallon = 3785 cm3 = 4 quart; 1 pound = 45
An ideal PEM cell needs 30.35 g H2 to produce one kWh of electrical output. Suppose an electric car can travel 10 miles per kWh. How much hydrogen would be needed to give the car a range of 300 miles if the source of electricity is an on-board
A radioactive metal atom decays (goes to another kind of atom) by emitting an alpha particle (He2+ ion). The alpha particles are collected as helium gas. A sample of helium with a volume of 12.75 mL was obtained at 771 mmHg and 23°C. How many
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