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Calculate the cell potential at 25 under each of the following conditions.
A solution of water (Kb=0.512 C) and glucose freezes at 4.15. What is the molal concentration of glucose in this solution? Assume that the freezing point of pure water is 0.00 .
If a 202-mg piece of gold (density = 19.32 g/cm3) is hammered into a sheet measuring 2.4 ft multiplied by 1.0 ft, what is the average thickness of the sheet in meters?
The daily output of stomach acid (gastric juices) is 1000mL to 1400 mL. Prior to a meal, stomach acid HCl typically has a pH of 1.42.
A mixture of 2.00 moles of H2, 3.00 moles of MH3, 4.00 moles of CO2, and 5.00 moles of N2 exert a total pressure of 350kPa. What is the partial pressure of each gas?
At a particular temperature and 2.00x10^-2 M, concentration versus time data were collected for the reaction, and a plot of the natural log versus time resulted in a straight line with slope value o
Determine the freezing point of a solution which contains 0.31 mol of sucrose in 175 g of water. Kf = 1.86°C/m
Mixtures of helium and oxygen are used in scuba diving tanks to help prevent "the bends". For a particular dive, 29.0 L of oxygen gas at 25.0 C and 1.82 atm, and 6.31 L of helium gas at 25.0 C and 1
How many grams of cisplatin are formed from 55.2 of and 36.4 of if the reaction takes place in 95% yield based on the limiting reactant?
The half-life of tritium (31H) is 12.3 years. If 55.0 mg of tritium is released from a nuclear power plant during the course of a mishap, what mass of the nuclide will remain after 49.2 years?
What is the diameter, in micrometers, of a spherical ink droplet from an early version of an ink-jet printer if the volume of the droplet is 200 ± 10 pL? If the ink has a density of 1.1 g/
Calculate script e at 25°C for this battery when [H2SO4] = 4.5 M, that is, [H+] = [HSO4‾ ] = 4.5 M. At 25°C, script e° = 2.04 V for the lead storage battery.
A mass of 47.5 g of H2O(s) at 273 K is dropped into 225 g of H2O(l) at 298 K in an insulated container at 1 bar of pressure. Calculate the temperature of the system once equilibrium has been reached
A sample of oxygen that occupies 2.5 × 10-6 mL at 508 mm Hg is subjected to a pressure of 1.2 atm. What will the final volume of the sample be if the temperature is held constant?
Some liquids have high enthalpies of vaporization while others have relatively low values. Explain this fact in terms of the molecular properties of liquids.
How much heat is required to warm 221 g of ice from -44.7°C to 0.0°C, melt the ice, warm the water from 0.0°C to 100.0°C, boil the water, and heat the steam to 173.0°C?
Imagine that you have a 5.00 gas tank and a 4.00 gas tank. You need to fill one tank with oxygen and the other with acetylene to use in conjunction with your welding torch.
What mass of water can be heated from 15?C to 100?C by burning this piece of coal?
What is the condensed structural formula for 2,2-dimethyl, 4-heptyne
A sample of molten iron occupies of a volume of 7.11 x 10-3 L. If the density of iron is 7.86 g/cm3, what is the mass of iron in grams in the sample?
A solution is initially 2.5 ? 10-3 M in Cu+ and 2.5 ? 10-3 in Pb 2+. Iodine ion is gradually added to the solution. Determine the concentrations of Cu+, Pb +2, and I- at the point of maximum separatio
In the experiment, sodium bisulfite solution is added at the end in order to destroy the unreacted bromine. What reaction is occurring here? Is HSO3- acting as an oxidizing or reducing a
A small collection of dimes and quarters are submerged in 10.00 mL of water in a graduated cylinder causing the water level to rise to the 18.87 mL mark. What is the combined monetary value (in Can$)
calculate the number of grams of acetic acid per 10ml of the vinegar. Since vinegar has a density of about 1.00 gram/ml, 100 ml eighs about 100 g. thus this calculation also gives the percent by wei
Calculate the theoretical yield percentage of a reaction between sodium and water, if 25.0 g of sodium react with excess water and if 15.5 L of gaseous hydrogen are collected at NTP conditions.