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Problem- A 19.59 g sample of a compound contains 6.25 g potassium (K), 5.67 g chlorine (Cl), and oxygen (O). Calculate the empirical formula.Explain each and every step in detail. I need proficient help in the above problems.
How many milliliters of 0.200 M FeCl3 are needed to react with an excess of Na2S to produce 1.38 g of Fe2S3 if the percent yield for the reaction is 65.0%? 3 Na2S(aq) + 2 FeCl3(aq) ? Fe2S3(s) + 6 NaCl(aq)
What are the standard conditions of temperature and pressure, and why is it important to have a set of standard conditions
Transition metals can combine with carbon monoxide to form compounds such as Fe(CO)5 and Co2(CO)8. If you combine 0.150 g Ni with CO and isolate 0.437 g Ni(CO)x
When the flask is allowed to cool the vapor condenses and aire again refulls the flask. Re weighing the flask and figure out the the wight of the unknown vapor which filled the flask during the boiling. Explain why it is not necessary to know the w..
Name three similarities or differences between this hormone and insulin. Name three similarities or differences between this hormone and cortisone
A product has glycerol Molecular weight=92. The product contain 25% by weight glycerol and has a void fraction of ~70%, and a density of 1g/cm^3. Find its molar concentration
The appropriate chemical equation is PCl3(g)+Cl2(g) PCl2 Calculate the new partial pressures after equilibrium is reestablished.
What is the mechanism for the reaction between acetophenone and p-anisaldehyde is the presence of sodium hydroxide. Include arrows showing electron movement. The product is trans-p-Anisalacetophenone.
Gold has cubic crystals whose unit cell has an edge length of 407.9 pm. The density of the metal is 19.3 g/cm3. Calculate the number of gold atoms in a unit cell. What type of cubi lattice does gold have
2NH3(g)----N2(g) + 3H2 (g) at equilibrium, it was found that the concentrations were: .0584M for H2, .0195M for N2 and .430M for NH3. What was the initial concentration of ammonia
Butane (C4H10) is burned to completion in air. How many moles of air are used for each mole of butane if 18% excess oxygen is used
Some of the cyclohexane solvent vaporized during the temperature versus time measurement. Will this loss of cyclohexane result in its freezing point being recorded as too high, too low, or unaffected Explain.
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