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Mercury has a density of 13.6 g per mL. A barometer holding 9.50mL of mercury has broken. The cost of mercury disposal is based on mass. How many kilograms of mercury were in the barometer?
solution made from 6.50g of an unknown compound in 27.8g of diphenyl has a molality of .195m. Calculate the molar mass of the unknown.
Consider the reaction of 5.0 moles of CS2 and 3.0 moles of NaOH according to the following reaction 3 CS2 + 6 NaOH -> 2 Na2CS3 + Na2CO3 + 3 H2O.
Explain why acetone in the cyclohexane would invalidate the experiment?
What weight of Pb(NO2)2 wil have to be dissolved in one liter of water to prepare a 100ppm Pb2+ solution.
Calculate the molar solubility of AgCl in a 1.00L solution containing 10.0g of dissolved CaCl2. Compare the molar solubility of Mg(OH)2 in water and in a solution buffered at a pH of 9.0
3CuSO4 + 2Fe --> 3 Cu + Fe2(SO4)3 If you place .092 mol of iron filling in a solution containing .158 mol of CuSO4, what is the limiting reactant? How many moles of Cu will be formed.
What proportion of 3-phosphoglycerate will carry 14C after five enzymatic turnovers (five equivalents of CO2 are fixed) if purified active
How to Name and Define Acids, How can you know that HNO3 is nitric acid and HNO2 is nitrous acid? How do you know the difference in endings?
The osmotic pressure,pie , of a solution of glucose is 83.1atm . Find the molarity of the solution at 298k .
Calculate the pH at the points in the titration of 20.00 mL of 0.318 M NH3 of 0.470 M HCl have been added. For NH3, K_b=1.8*10^-5.
A 0.1946 g piece of magnesium metal is burned in a constant volume calorimeter that has a heat capacity of 1349 J/°C.
3 isotopes of argon occur in nature. Ar-36, Ar-38, and Ar-40. The abundance of each are as follow: 0.34%, 0.07%, and 99.59%.
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