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calculate the number of grams of iron and the number of grams of carbon dioxide formed when 0.350 kg of Fe2O3 reacts.
An Ice cube tray holds 325 grams of water. If the water initially has a temperature of 25 C, how many kilojoules of heat must be removed to cool and freeze the water 0 C?
Rank the following aqueous solutions in order of increasing boiling point: 0.10 mNa2SO4, 0.10 m SrSO4, 0.25 m sucrose, 0.20 m glucose, 0.15 m NaCl
The pressure of a gas is 817 torr at 55°C. The quantity of the gas is fixed and the volume remains constant as the pressure is adjusted to 102 torr. What is the resulting temperature of the gas?
What is the pressure inside a system when the system-side column in an open mercury manometer is 75.0 mm lower than the atmosphere side when the atmospheric pressure is 735 mm Hg?
which of the following accounts for the unusually high boiling point of water? the density of water, the hydrogen bonds in water
Calculate the freezing point of 0.15m calcium chloride aqueous solution. Assume that the molal freezing point depression constant
The half-life for the radioactive decay of U-238 is 4.5 billion years and is independent of initial concentration. How long will it take for 10% of the U-238 atoms in a sample of U-238 to decay?
Suppose 35.68 mL of 0.01015 M KMnO4 is required to titrate 3.576 g of a sample containing C2O42-. What percentage Oxalate is present in the sample?
M+ is added to a solution of 0.0035 M X- and 0.0016 M Z-. MX has Ksp = 8.2 × 10^-9, while MZ has Ksp = 1.7 × 10^-10. What percentage of the Z- is still in solution (not precipitated) when the MX just starts to precipitate? Answer in units of %.
Metallic copper is formed when aluminum reacts with copper(II) sulfate. How many grams of metallic copper can be obtained when 54.0 g of Al react with 319 g of CuSO4?
Its undissociated form is red and its anionic form is yellow. What color would a methyl red solution have at pH = 7.0 ? Show your calculations. Hint: Determine the concentration ratio of methyl red and its conjugate.
Determine E° for the reduction half-reaction Ce4+(aq) + e- → Ce3+(aq), given that the cell voltage for the following voltaic cell is E°cell = 1.887 V:
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