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I am actually encompassing problems in understanding stoichiometry. I 'm a bit baffled on how to solve problems such as, finding the number of moles as well as other related problems. Explain what I really need is a guide/keys or even sample problems for me to easily solve problems
a buffer solution is prepared by adding 15.00 g of sodium acetate nac2h3o2 and 12.50 g of acetic acid to enough water
Using the standard entropy values: H2(g), S° = +130.6 J mol-1 K-1 I2(s), S° = +116.12 J mol-1 K-1 HI(g), S° = +206.0 J mol-1 K-1 calculate the standard entropy change, DeltaS°, for the reaction
Calculate the internal energy change (deltaU) for vaporization of 100 g of Cl2(liq.) at this temperature and 1 bar? (b) Calculate its molar entropy change (AS) for vaporization at this condition
Determine the amount of sodium that has been actually added, in grams and state the chemical formula of salt & classify the bond as ionic, polar or non-polar covalent.
Calculate the amount of HCN that gives the lethal dose in a small laboratory room measuring 12.0 ft×15.0 ft×8.50ft.
what is the formula used to determine the mass of KClO3 to form a saturated solution in 250g of water at 30 degrees celcius
What is the significance of copper cycle? what type of changes take place?
the reaction of a particular alcohol with a carboxylic acid is 3.83. What is the calculated yield of the ester?
Beginning with the absorbance of your unknown brass sample show computation for a) Cu+(2) (aq) concentration; b) mass of Cu in brass; c) percent Cu in brass, d) the average percent Cu in brass.
Write balanced equations for the combustion of methane, CH4(g) and octane C8H18 in air. The products are carbon dioxide and liquid water. Calculate the standard enthalpy for each equation called the heat of combustion.
Through an enolate ion reaction (aldol condensation, claisen condensation, acetoacetic ester or malonic ester synthesis), what is the reaction equation to form cyclohexene
What is the pH after 0.150mol of HCL is added to the buffer from part A? Assume no volume change on the addition of the acid.
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