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1)Sulfamic acid, HSO3NH2, and sodium nitrite, NaNO2, should not be brought together as solids for safety reasons, why is water added to the vial containing your unknown sample as well as to the Erlenmeyer flask containing sulfamic acid? 2)Upon reaction with excess sulfamic acid, HSO3NH2, a 0.121g sample of a mixture of sodium nitrite, NaNO2, and sodium chloride, NaCl, produced 28.3 mL of nitrogen gas collected over water at 25.3 degrees Celsius and at a barometric pressure of 738 mmHg. Determine the percent by mass of NaNO2 in the original sample. Show clearly your calculations and reasoning.
Determine the mass of 100 mL of solution for this reaction: the results were 2.05 g of NaOH, 102.05 grams (total solution-when added with the water).
How much work must be done to bring ion A and ion B together into an activated complex. The charge of ion A is +2 and it's ionic radius is 2.85 A and if the charge on ion B is +1 and it's ionic radius is 1.35 A
a solution of 0.64 grams of adrenaline in 36.0 grams of CCl4 elevates the boiling point by 0.49 celsius. what is the molar mass of adrenaline?
Find the number of moles of water that can be formed if you have 218 of hydrogen gas and 104 of oxygen gas. Express your answer with the appropriate units.
KRB pelle technique, solvents, mulls, thin film plate technique. which one of the following methods is better
What is the vapor pressure of a solution prepared by dissolving 51.0 g of C6H12O6 (a nonvolatile solute) in 120 g of water? (Assume the solution is ideal.)
At a particular temp and pressure it takes 4.55 min for a 1.5 L sample of He to effuse through a porous membrane. how long would it take for 1.5 L of F2 to effuse under the same conditions
What are the procedural difference between the preparation of tin oxide and magnesium oxide
The flame produced by the burner of gas (propane)grill is a pale blue color when it mixes with propane(C3H8) to burn it completely. For every gram of propane that flows through the burner, what volume of air is needed to burn it completely?
Suppose that two equal volumes of 0.2 molar NaCl (aq) solutions are separated by a membrane and that the left -hand compartment of the experimental arrangement contains a polyelectrolyte molecule Na6P at a concentration of 50 g/liter
The molar solubility of magnesium carbonate is 1.8 ? 10-4 mol/L. What is Ksp for this compound
which portion of the titration curve are you in to reach pH = 7? Show your calculations to prove that dilution of 10,000 gal aniline requires 0.58 gal of this acid.
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