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Calculate the amount of energy required (in joules) to heat 2.5 kg of water from 18.5oC to 55.0oC.
You want to make one liter of a solution containing 10 mg/ml sodium phosphate, 10 mg/ml sodium chloride, and 10 mg/ml potassium nitrate. How much of each starting solution do you need to use, and how much water do you need to add?
You have 250.0 ml of 4.00 M sugar solution. You add 217.3 ml of water to this solution. Determine the concentration of the sugar solution after the water has been added
How many moles of KCl are required to prepare 1.50 L of 5.4 M KCl?
Problem- 15.0 moles of gas are in a 3.00L tank at 21.8?C. Calculate the difference in pressure between methane and an ideal gas under these conditions. The van der Waals constants for methane are a=2.300L2?atm/mol2 and b=0.0430 L/mol.
1. How many CO2 molecules are needed to produce 1 glucose molecule (in photosynthesis)? 2. How many moles of oxygen atoms are in 1 mole of calcium phosphate?
what is the ph of a solution prepared by mixing 50.0ml of 0.125M KOH and 50.0 ml of 0.125M HCl
If 1.0 mol of Mg is mixed with 2.0 mol of Br2 and 0.68 mol of MgBr2 is obtained explain what is the percent yield for the reaction
At a certian temperature and pressure, chlorine molecules hav an average velocity of 0.0610m/s. What is the average velocity of sulfur dioxide molecules under the same conditions.
Question- Draw the titration curve for Tyrosine showing: each pKa, point and value, the pI point and value and the predominate structure and charge in each pH range
Calculate the energy (joules) required to achieve the transition from the ground state to the first excited state for this system.
What is the velocity (m/s) of a doubly protonated ion with a m/z ration of 324.9, which has been accelerated to a kinetic energy of 0.75 MeV?
While aqueous solutions of cadmium chloride and sodium sulfide are mixed a precipitate of cadmium sulfide forms, leaving soluble sodium chloride in the solution. Include states in your answer.
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