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If the yellow molecules have a molecular mass of 50 {\rm amu}, what is the molecular mass of the blue molecules?
water has a molar heat of vaporization 40.79 kjmoldetermine how many grams of water could be vaporized by 0.806 kilo
already have a solution that contains 10 mmol of acetic acid. how many millimoles of acetate will you need to add to this solution? the pKa of acetic acid is 4.74
What are the complete and net ionic equations for silver nitrate and potassium iodide in a double displacement
3.00×10-3 mol of HBr are dissolved in water to make 18.0 L of solution. What is the concentration of hydroxide ions, [OH^-], in this solution?
When a 8.26-g sample of gaseous hydrogen bromide dissolves in 36.2 g of water in a coffee-cup calorimeter the temperature rises from 25.00C to 82.14C. Calculate H in kJ/mol HBr for the solution process.
What is the pH at the equivalence point for the titration of 0.20 M HCl with 0.20 M NH3?
The solubility of nitrogen in water exposed to the atmosphere, where the partial pressure of nitrogen is 593 mm, is 5.3 × 10-4 M. At the same temperature, what would be the solubility of pure nitrogen, at a pressure of 760 mm
Calculate the freezing point of each of the solution 75.0 g of glucose,C6H1206 , added to 0.539 kg of water. Calculate the boiling point of the solution. 75.0 g of glucose,C6H1206 , added to 0.539 kg of water.
assume that a particular process evolves 224 kj of heat and that 35 kj of pv work is done on the system at constant
Complete and balance the equation for this reaction in acidic solution. MnO4- + HNO2 -> NO3- + MN2+ Which element got oxidized. Which element got reduced. Which Species was the oxidizing agent
calculate the PH at the points in the titration of 20.00 ml of 0.318M NH3 when, a) 10.00 ml and 15.00 ml of 0.475 M HCl have been added.
How many liters of oxygen are needed to exactly react with 19.8 g of methane at STP?
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