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A slice of pizza contains 28g of carbohydrates 13g of protein and fat. If the pizza contains 280Kcal, explain how many grams of fat are present?
The freezing point of pure benzene was measured as 5.49 °C. With the same benzene and the same equipment, the freezing point of a solution containing 6.60 g of an unknown compound in 140 g of benzene was found to be 2.35 °C.
Calculate the change in internal energy of the following system: a balloon is cooled by removing 0.654 kJ of heat. It shrinks on cooling, and the atmosphere does 385 J of work on the balloon.
What is the chemical equation of this coupled process? Show that the reaction is in equilibrium, include physical states, and represent graphite as C(s). What is the thermodynamic equilbrium constant for the coupled reaction
How to do I calculate the pH of original buffer given mass of NaC2H3O2*H2O (FW =136 g/mol) = 3.507 gafter measuring out 8.8 mL of 3.0 M acetic acid to add to the beaker containing the sodium acetate. Then put in 55.6 mL of distilled water with the..
How many milliliters of 0.220M Na2S2O3 solution are needed for complete reaction with 2.401g of I2 according to the equation below. I2(aq)+2S2O3^2-(aq)------>S4O6^-2(aq)+2I-(aq)
What volume in mL of concentrated nitric acid (72.0% HNO3 (w/w), sp. gr. 1.42) is required to prepare exactly 2.00 L of 0.200 M HNO3?
Compute the internal energy change if an ideal gas expands from a volume of 2.3 L to 6.4 L against a pressure of 1.8 atm and 330 J of heat are transferred from the surroundings to the system.
When optically active B was treated with CrO3 in pyridine, an optically inactive sample of A was obtained. Heating A with hydrazine in base gave hydrocarbon C, which, when heated with alkaline KMnO4, gave carboxylic acid D. Identify compounds A, B..
if 100 mL of 0.800 M Na2SO4 is added to 200 mL of 1.20 M NaCl, what is the concentration of Na ions in the final solution?
how much heat will be released when 6.44 grams of sulfer reacts with excess oxygen according to the following equation?
A) What is the pH of the solution. B) To what volume must you dilute the solution to triple the percent dissociation
question a buffer solution contains 0.12 mol of propionic acid and 0.10 mol of sodium propionate in 1.50 lwhat is the
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