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A sample of a new compound is burned in an excess of air to produced CO2 and H2O. If 0.468 g of the sample produce 0.458 g of CO2 and 0.094 g of H2O and the molar mass is about 230, what is the likely molecular formula of this compound?
A solution is prepared by dissolving 12.4 g ammonium sulfate in enough water to make 100.0 mL of stock solution. A 12.50 mL sample of this stock solution is added to 55.00 mL of water. Calculate the concentration of ammonium ions and sulfate ions ..
Calculate the fraction of atoms in a sample of argon gas at 391 K that have an energy of 12.7 kJ
Determine the mass of phosphorus (P) is required to make 39 grams of this product?
If 8.6 L of NO is combined with excess O2 at STP, what is the volume in liters of the NO2 produced?
calculate the standard enthalpy of reaction C6H6 (I) +3H2 (g)® C6H12 (I) from standard enthalpies of combustion of substances.
What proportions of ethanol and water should be mixed in order to produce 100 cm3 of a mixture containing 50 percent by mass of ethanol.
What is the basis for distillation techniques used to separate two or more components and If so, this would give me the four apparatus requested.
Determine how many moles of carbon dioxide should be added to the system to bring the equilibrium carbon monoxide concentration to 0.743 mol/L
When 0.549 moles of a certain gas fill a balloon the volume is 75 mL. If enough of the same gas is added to the balloon until 1.44 moles of gas are present, what is the new volume of the balloon?
A solution of I2 was standardized with ascorbic acid. Using a 0.100 g sample of pure ascorbic acid, 25.32 ml of I2 were required to reach the starch end point.
Determine the initial quality and temperature of the fluid mixture prior to heating. [quality x1 = 0.182, T1 = 113.3°C] b) Determine the final volume of the steam after heating. [0.546 m3 (546 liters)] Note: 1000 liters - 1 m3
Suppose 317 mL of 4.14 M HCIO4 Solution is added to enough water to make a total of 7.70 L. What is the molarity of HCIO4 in this new solution?
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