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Question: In a reaction, 34.6 g of chromium(III) oxide reacts with 12.3 g of aluminum to produce chromium and aluminum oxide. If 23.7 g of chromium is produced, what mass of aluminum oxide is produced?
Chromatographic column, it is important to let the level drop in the column eluent to the level of the sand before applying the solution of the compound to be separated. What effect would have on the efficiency of separation ignore this recommenda..
The density of silver is 10.5 g/mL. What is the mass (in grams) of a piece of silver with a volume of 23.6 mL
What is the minimum number of 1.0 L bottles of concentrate needed to make the wine have the correct level of sugar. Remember to show all work, units and assumptions.
How does the chromatographic seperation ability of thin layer chromatography compare to seperation (resolving) power of column chromatography?
ultisols are an important soil order in this group of soils. describe the typical profile of this soil order paying
Consider a gas mixture in a 1.50 dm3 flask at 22.0 C for each of the following mixtures, calculate the partial pressure of each gas, the total pressure and the composition of the mixture in mol percent
What is the theoretical yield of aspirin if 190 kg of salicylic acid is allowed to react with 128 kg of acetic anhydride?
Hydrogen was cooled from 150 c to 50 c. It's new volume is 75 ml. What was the original volume?
If the final temperature of the combined liquids is 28.5°C and the heat capacity of the calorimeter is 19.3 J/°C, determine the specific heat of methanol.
A scientist wants to make a solution of sodium phonsphate for a lab experiment. How many grams of sodium phosphate will be needed to produce 475 ml of solution that has a concentration of Na+ ions of 1.50 M?
When you calculate the molarity and molality of the EDTA solution are the values very similar or not? Explain if this is what you might expect for a dilute aqueous solution with a density very close to 1.0 g/mL.
You will be assigned a pigment color. Describe in detail how you plan to go about determining which pigment to make.
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