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The density of germanium is 5.325g/cm3. If you made a 5nm quantum dot of germanium, Explain how many Ge atoms would it contain? Presume the dot is spherical.
How many grams of dry NH4Cl need to be added to 2.40 L of a 0.300 M solution of ammonia (NH3) to prepare a buffer solution that has a pH of 9.00? Kb for ammonia is 1.8e-5
constant ratenbsp is 3.20times10-4 ms for a zero-order reaction. concentration has dropped to 9.00times10-2 mnbsp after
The mole fraction of A in the vapor is found to be 0.67. What is the mole fraction of A in the solution?
What is the rate constant of a first-order reaction that takes 8.50 minutes for the reactant concentration to drop to half of its initial value?
Using information from the table of Standard Thermodynamic Data, calculate the equilibrium constant, Keq, for the reaction given below at 298 K.
A mixture of ammonia and oxygen is prepared by combining 0.260 L of NH3 (measured at 0.700 atm and 21°C) with 0.170 L of O2 (measured at 0.740 atm and 49°C). How many milliliters of N2 (measured at 0.740 atm and 100. °C) could be formed if the fol..
The vapor pressure of pure acetone (propanone) is 266 torr. When a non-volatile solute is added, the vapor pressure of acetone above the solution falls to 232 torr. What is the mole fraction of the non-volatile solute in the solution?
henrys law constants for aqueous solutions at 25degc are 8.20 times 10-7 molalmmhg for n2 and 1.62 times 10-6 molalmmhg
Sodium carbonate ( Na_2CO_3) is used to neutralize the sulfuric acid spill. How many kilograms of sodium carbonate must be added to neutralize 5.04×103 kg of sulfuric acid solution?
"If 2.3g of Sodium reacted with 1.8g of water, what would be the total mass of Sodium Hydroxide and hydrogen produced? Explain your answer"
Draw the chemical structure of a molecule of your design that meets all of the following requirements while also being chemically 'reasonable' ('reasonable' based on a general chemistry, Chem 110/112 knowledge of chemical structure and bonding).
Compute how many grams of aluminum sulfate are required to prepare 5.30x10 2ml of a 0.2450 M aluminum sulfate solution.
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