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How many grams of urea must be added to 88 milliliters of water in order to obtain a solution with a mole fraction of 0.012 in urea?
At what point in a Grignard Reaction is it no longer water sensitive? explain why the reaction can be exposed to water after this point
After mixing 500mg of XI3 with sufficient Cl2, 236mg of XCl3 are obtained. This represents 100% yield of that reaction. Determine the identity of element X.
Nickel is a transition element and has a variable valence.Using a nickel salt, 2 F (faradays) plate out 39.2 g ofnickel. What ions are in the solution of this salt? Atomic molar masss Ni = 58.7 g·mol-1
If it takes 526 J of energy to warm 7.40 grams of water by 17 degrees Celsius, how much energy would be needed to warm 7.40 grams of water by 55 degrees Celsius?
When the container is re-sealed, the pressure is 185 kPa and the temperature is 10 degrees C. What is the ratio of the amount of gas lost?
Explain why emission spectrophtometry has the ability to be much more sensitive than absorbance spectroscopy
How do the enthalpy of dissolution, the crystal lattice energy, and the solvation energy of the two salts relate to these experimental observations?
Potassium hydrohen phthalate, KHC8H4O4, functions as monoprotic acid. If a 1.46 g sample of impure KHC8H4O4 requires 34.3 ml of 0.145 M NaOH
The reaction of coal with water at high temperatures produces synthesis gas, which is a mixture of carbon monoxide and hydrogen. Use the bond energies in the table below to estimate the enthalpy of the reaction
A furniture factory needs 36.5 ft2 of fabric to upholster on a chair. Its Dutch supplier sends the fabric in bolts of exactly 200 m2. What is the maximum number of chairs that can be upholstered by 3 bolts of fabric (1 m = 3.281 ft)?
moles of dye in 50 mL of solution is consumed in 188 seconds, what is the average rate of consumption of dye in mol/L.s?
the molar heat of combustion of methanol ch3oh is -757kjmol. if 2g of methanol is placed in bomb calorimeter with heat
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