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8.20 grams of solute in 861 grams of water lower the freezing point to -0.430 degree celsiuscalculate the molecular mass of the nonionic solutes.
Sodium carbonate (Na_2CO_3) is used to neutralize the sulfuric acid spill. How many kilograms of sodium carbonate must be added to neutralize 6.05×10^3 kg of sulfuric acid solution?
How much heat (in ) is required to warm 12.0 of ice, initially at -12.0, to steam at 114.0? The heat capacity of ice is 2.09 and that of steam is 2.01 .
0.50 mol of argon gas is admitted to an evacuated container at 20 degrees Celsius. The gas then undergoes an isobaric heating to a temperature of 280 degrees Celsius. What is the final volume of the gas?
What would the absorbance readings be for the acid and base forms of methyl red indicator at the acid wavelength? At the base wavelength?
Will the temperature of the water be greater than or less than 20 C when thermal equilibrium is reached? Calculate the final temperature
Hydrogen was cooled from 150 c to 50 c. It's new volume is 75 ml. What was the original volume?
Consider the reaction 4 Fe(s) + 3 O2(g) → 2 Fe2O3(s). If 12.5 g of iron(III) oxide (rust) are produced from 8.74 g of iron, how much oxygen gas is needed for this reaction?
Calculate total enthalpy change in the first stage and in both stages.
0.10 gram sample of a gas occupies 47 ml of vol at 25 deg C and 755 mm Hg. What's the FW of the compound?
Find the temperature capable of expanding 2.500 liters of chlorine at 18.00°C and 0.9000 atm to 5.200 liters. No change in pressure took place.
A copper wire (density = 8.96 g/cm3) has a diameter of 0.27 mm. If a sample of this copper wire has a mass of 35 g, how long is the wire?
An acid solution is 0.100 M in HCl and 0.190 M in H2SO4.What volume of a 0.150 M KOH solution would have to be added to 550.0 mL of the acidic solution to neutralize completely all of the acid?
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