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Given the following balanced reaction, if a mixture of 1.50 mol of Al and 3.00 mol of Cl2 are allowed to react, how many moles of AlCl3 are formed, assuming a 75% yield?
A camping stove uses a 5.0 L propane tank that holds 3.0 kg of liquid C3H8. How large a container would be needed to hold the same amount of propane as a gas at 25 C and a pressure of 3.0 atm?
What is the buffer capacity of the solution? That is, how many millimoles of strong acid or strong base can be added to the solution before any significant change in occurs?
If the freezing point of a 10.0g sample of t-butanol is 24.59C. How many grams of water are present in the sample?
Ionic concentrations of Na+ and K+ ions in the plasma of mammalian cells are 145 and 4 mM, and in the cytoplasm are 12 and 140 mM, respectively. Calculate the magnitude of electrical potential acros
What is the enthalpy of this reaction? Assume that no heat is lost to the surroundings or to the coffee cup itself.
How many air molecules are in a rm 12.0 times 12.0 times 10.0~ft room? Assume atmospheric pressure of 1.00 rm atm, a room temperature of 20.0 rm {}^{circ}C, and ideal behavior.
When 0.0172 mol HI is heated to 500 K in a 2 L sealed container, the resulting equilibrium mixture contains 1.9 g of HI. Calculate Kc for the decomposition reaction 2HI(g) -> H2(g) + I2(g) .
A buffer solution is made by dissolving CH3COOH and NaCH3COO in water. Write an equation that shows how this buffer neutralizes added acid? write and equation that shows how this buffer neutralizes
Carbon monoxide (CO) is toxic because it binds more strongly to the iron in hemoglobin (Hb) than does oxygen (O2). Estimate the equilibrium constant K at 298 K for the equilibrium HbO2 + CO <-->
Gaseous ethane will react with gaseous oxygen to produce gaseous carbon dioxide and gaseous water . Suppose 10.82 g of ethane is mixed with 62.90 g of oxygen. Calculate the maximum mass of water tha
A process plant inventories the following chemicals: vinyl chloride, methyl ethyl ketone, ethylene oxide, styrene, and cyclohexane. Determine the hazards associated with these chemicals. What additi
Calculate the cell potential after the reaction has operated long enough for the [Al3+] to have changed by 0.32 mol/L. (Assume T = 25°C.)
The product ethane (C2H6) has a volume of 58.0 mL. Calculate the amount of PV work done, and tell the direction of the energy flow.
There are graphs of Percent Transmittance vs Concentration and Absorbance vs Concentration. Which of the two concentration graphs will appear to represent a straight line function the best? Explain.
Calculate the pH of a solution that is formed when 25.0 mL of 0.24 M ammonia (Kb = 1.8 x 10-5) is mixed with 25.0 mL of 0.20 M ammonium chloride.
What is the final temperature (in °C) of 1.53 g of water with an initial temperature of 12.0°C after 7.478 J of heat is added to it?
How much heat is gained (in Joules) by the water where a chemical reaction takes place in 100 mL aqueous solution and has a temperature increase of 14 C?
If the total blood volume of the individual is 5.1 L, how many grams of total blood cholesterol does the individual's body contain?
Consider the following equation: 2Mg(s) + O2 (g) → 2MgO(s). How many grams of MgO are produced when 40.0 grams of O2 react completely with Mg?
A 0.221 g pellet of potassium hydroxide,KOH, is added to 52.2 g water in a Styrofoam coffee cup. The water temperature rises from 23.5 to 24.4 °C. (Assume that the specific heat of dilute KOH a
The other is two (1,1-dimethyl)propyl, How to distinguish the aromatic proton signal when they are the three possible position: para, meta and ortho?
A student placed 20.0g of glucose in a volumetric flask, added enough water to dissolve the glucose by swirling, then carefully added additional water until the 100.0 mL mark on the neck of the flas
a saturated solution contains 11.0 g NaBrO3 in 40.0 mL of water at 0 degree Celsius. What is the solubility in g solute/(100 g H2O)? Calculate the mole fraction at this temperature.
A children's pain relief elixir contains 80.mg acetaminophen per o.50 teaspoon. The dosage recommended for a child who weighs between 24 and 35 lb is 1.5 teaspoons. What is the range of acetaminophe