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If a 20.071g sample of aqueous waste leaving a fertilizer manufacturer contains ammonia. The sample is diluted with 70.659 g of water. An 11.772 g aliquot of this solution is subsequently titrated with 0.1068 M HCl. It needed 30.77mL of the HCl solution to reach the methyl red endpoint. Compute the weight percent NH3 in the aqueous waste.
After 70.82 minutes of surgery the drug began to lose its effect, but more surgery was required. How many moles of the anesthetic must be re-administered to restore the original level of the anesthetic
at 80c the vapor pressures of pure liquids x y and z are 385 190 and 66 mmhg respectively. what pressure must be
If a 190 piece of gold (density =19.32 ) is hammered into a sheet measuring 2.4x1.0 ft , what is the average thickness of the sheet in meters?
A solution containing 80.5g of C6H8O6 dissolved in 210g of water has a density of 1.22 g/mL at 55 C. State the concentration of C6H8O6 in each of the following
How much heat is needed to warm 45.6 grams water from 23.0° C to 40.0 °C?
Assume a wind turbine with a hub 50 meters above the ground, a rotor diameter of 75 meters and a wind-conversion efficiency of 25 percent.
When heated, a 9.6 g sample of ammonium perchlorate, NH4ClO4 ignites and burns in the absence of any other material to produce N2, HCl, H2O and O2. Write the balanced chemical equation for this process and determine the mass of H2O produced.
a 1.505 g sample of unknown was dissolved in 50 ml of benzenedensity 0.879 gml solution had melting point of 4.70
Draw the skeletal structure of the major organic product in the following reaction (water is also a product).
Give the name and formula for the acid derived from each of the following anions. (Type your answer using the format CO2 for CO2.) (a) perchlorate (b) NO3- (c) bromite (d) F -
Order the following compounds according to their expected lattice energies: LiBr, LiCl, LiI, KI, NaI, Express your answers as chemical formulas. decreasing expected lattice energy separated by commas.
Find the mathematical relationship that relates energy of a photon emitted as an electron relaxes from a higher energy level to a lower energy level in a hydrogen atom. Use this equation to calculate the wavelength of the photon emitted in units o..
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