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A solution is prepared by dissolving 12.9 g ammonium sulfate in enough water to make 100.0 mL of stock solution. A 15.00 mL sample of this stock solution is added to 53.00 mL of water. Calculate the concentration of ammonium ions and sulfate ions in the final solution.
1.0 mol of CaCN2 and 1.0 mole of water are mixed together: CaCN2 + 3 H2O → CaCO3 + 2 NH3 How much NH3 could be produced?
A student found that a maximum of 0.800g silver acetate is able to dissolve in 100.0ml of water. What is the molar solubility and Ksp for the salt?
consider a stone column 3.00 ft in diameter and 10.00 ft high. What is is mass in pounds if its density is 3.50 g/mL.
A particular calorimeter is calibrated and is found to have a calorimeter constant, Ccal = 3.640 kJ/°C. When 1.500 g of an unknown hydrocarbon was combusted in the calorimeter
Using a solution containing 0.302 grams of an antibiotic has an osmotic pressure of 8.34 mmHg At 23.6°C, 0.500 L. calculate its molecular mass.
You place ethanol of 100 grams and water of 100 grams in a refrigerator. both are at room temperature Initially,. Determine which of the two liquid samples will cool faster and also explain why this happens.
A proton in a linear accelerator has a de Broglie wavelength of 138 pm. what is the speed of the proton?
Bromine addition to trans-cinnamic acid, During bromine addition to trans-cinnamic acid, why is it necessary to maintain excess bromine in the reaction mixture
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 sample of He gas (V = 3.0 L) at 5.6 atm and 25 °C was combined with 4.5 L of Ne gas at 3.6 atm and 25 °C in a 9.0 L flask (which was initially evacuated).
How many grams will remain after 98.0 days if Phosphorus-32 has a half-life of 14.0 days Starting with 6.00g of ,?
Bond Energies, Using the bond energies below, determine the value and sign of delta H for the
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