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Describe a procedure by which you would prepare 250 cubic centimeter of aqueous sulphamic acid of accurately known concentration. Assume that you are provided with a weighing bottle containing between 2.4g and 2.5g of sulphamic acid and that this is a suitable mass to use.
A 460 mL sample of oxygen (O2) was collected by displacement of water at 24 ? C under a total barometric pressure of 1095 torr. What mass of dry oxygen was collected? The vapor pressure of water at 24 ? C is 22 torr
calculate enthalpy change for the quantity of zinc reacted. Be sure to follow the significant figures convention in the answer you report.
If 5.50 mol calcium carbide reacts with an excess of water, how many moles of acetylene will be produced.
What is the pH of a solution containing 50.00 mL of 1.0 M HCl and 50.00 mL of 1.0 NH3? The Kb for NH3 = 1.8 x 10-5.
Assume equilibrium with the calcium carbonate in the sediment and calculate the concentration of calcium ion
Water flowing through pipes of carbon steel must be kept at PH 5 or greater than limit corrosion if an 8.0 *10^3 Ib/hr water stream contains 10 ppm sulfuric acid and 0.015% acetic acid, how many pounds per hour of sodium acetate trihydrate must be..
What is the molecular formula for the compound containing 30.4% nitrogen and 69.6% oxygen by mass and having a molar mass of 92.0 g?
when relatively small amounts of magnesium burn the fires are extinguished using commercially available dry powder. why
Show the condensation of two glucose molecules to form a disaccharide with an alpha linkage; with a beta linkage.
Why are acid chlorides more reactive towards nucleophilic substitution than ethyl esters? Give an explanation of why acid chlorides are more reactive toward nucleophilic substition than are the corresponding ethyl esters.
Complete and balance the following redox equation that occurs in acidic solution using the set of smallest whole-number coefficients. What is the sum of all the coefficients in the equation
What are the empirical formula and the molecular formula of the compound.
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