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If 32.5 grams of CaO are dissolved in 212 grams of water, what is the concentration of the solution in percent by mass?
If 1.56g of a gas has a volume of 1.00 L at .984 atm and 50 degrees Celcius, what is the molar mass of the compound
Calculate the pH of a solution prepared by dissolving 0.30 g of BaO in enough water to make 0.800 L of solution.
Determine the mass of the steel bar If the final temperature of the system reached to 21.0 degree celsius?
Concentration of H 2 is observed 2.15 moles/L When the reaction N 2 (g) + 3 H 2 (g) ?? 2 NH 3 (g) comes to equilibrium. Determine the numerical value of the Kc equilibrium constant?
Carbon oxide (carbon (II) oxide) can be purified of oxygen impurities by having it react with cobalt (II) oxide. If the impure carbon oxide contains a volume of 1.5% oxygen, and if it reacts with cobalt (II) oxide at 250 °C and 500 kPa.
A student placed 18.0 grmsof glucose () in a volumetric flask, added enough water to dissolve the glucose by swirling, then carefully added additional water until the 100 gm. mark on the neck of the flask.
What is the velocity of a first-order reaction when the reactant concentration is 6 x 10-2 M and the rate constant is 8 x 103 sec-1?
Consider the hydrazinenitrogen tetroxide rocket fuel reaction: 2N2H4 + N2O4 3N2 + 4H2O How many grams of N2H4 will be consumed by 46 g of N2O4?
The radius of the Earth is approximately 6370 km. if one could dig down straight towards the center of the Earth, one would find that the innermost 3480 km (the core) has an average density of about 11.g/cm^3.
A piece of metal of mass 20 g at 99?C is placed in a calorimeter containing 55.8 g of water at 23?C. The final temperature of the mixture is 30.4?C.
what volume of hydrogen at STP is produced from the reaction of 50.0g of Mg and the equivalent of 75g of HCl?
ideal gas in 2.0 L what will be the volume of the gas if the pressure on the container is doubled while the temperature is reduced from 400 K to 200 K.
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