Calculate the molarity of a solution made
Calculate the molarity of a solution made by dissolving 0.850 grams of Na2SO4 in enough water to form exactly 930 mL of solution.
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230 mL of an HCl solution with pH of 3.60 is added to 200 mL of an HNO3 solution. The resulting pH is 1.40. What was the pH of the original HNO3 solution?
a gas mixture with a total pressure of 770 mmHg contains each of the following gases at the indicated partial pressures: CO2, 122 mmHg; Ar, 209 mmHg; and O2, 191 mmHg. The mixture also contains helium gas. what is the partial pressure of the heliu
What is the concentration of Ni(II) in micromolar units. How many milligrams of NiCl2*6H20 are combined in the 50 ml. volume.
A Cu/Cu2+ concentration cell has a voltage of 0.24 V at 25M . The concentration of Cu^2+ in one of the half-cells is 1.5×10-3 . What is the concentration of Cu2+ in the other half-cell?
A physician wrote a prescription for Tylenol® 325 mg/5 mL with codeine 10 mg/5 mL liquid, 5 mL three times a day x 4 days as needed for cough
If a sample containing 2.11 mL of nitroglycerine (density = 1.592 g/mL) is detonated, how many total moles of gas are produced?
A liquid unknown was found to be soluble in cyclohexane and alcohol; the unknown was found to have a boiling point of 58 C at 670 mm Hg. What is the substance? What could you do to confirm your answer?
A soft drink contains 35 mg. of sodium in 315g. of H2O. What is the concentration of sodium in the soft drink in mass percent?
In a controlled greenhouse at 30.0C and 1.0 atm a crop of seeding tomato plants was found to consume 380 L of carbon dioxide gas during photosynthesis. Assuming 100% yield what a mass of glucose was produced for the growing plants?
A mixture of 60.0% ZnS and 40.0% CuS is heated in the air until the sulfides are completely converted to oxides as shown by the following equations .
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