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Describe what you would do to prepare 100 g of a 3.5 % solution of ammonium sulfate in water.
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A 43 kg person drinks 430 g of milk, which has a "caloric" value ofapproximately 3.0 kJ/g. If only 15% ofthe energy in milk is converted to mechanical work, how high (inmeters) can the person climb based on this energy i ...
A metal slug weighing 16.32g is added to a flask with a volumeof 52.6 mL. it is found that, 40.2 g of methanol (d = 0.791 g/mL)must be added to the metal to fill the flask. What is the density of the metal in g/mL?
How many moles of magnesium ion are present in 5.25g Mg 3 (PO 4 ) 2 ?
What is the chemical formula for the compound containing one nitrogen atom for every three iodine atoms.
Explain why the mass of the crucible and anhydrous salt is less than the mass of the crucible and the hydrate. What is the chemical formula of copper (II) sulfate?
One liter of nitrogen (N 2 ) and one liter of carbondioxide (CO 2 ), initially at one atmosphere pressure, are forcedinto a single evacuated 500 mL vessel. What is the total pressure, in atmospheres,if the temperature re ...
Sodium sulfide (11.7 g) reacts with hydrochloric acid (16.7 ml, 12.0 M) to yield sodium chloride and hydrogen sulfide. What is the theoretical yield (g) of hydrogen sulfide?
A student prepared a stock solution by dissolving 20.0 g of NaOH in enough water to make 150. mL of solution. She then took 15.0 mL of the stock solution and diluted it with enough water to make 65.0 mL of a final soluti ...
Q1. Sodium metal is very active with water. Therefore, determining the value of a block of sodium will be impossible by water displacement. On the other hand, the density of sodium metal can be found in the chemistry han ...
A 0.0500-mol sample of a nutrient substance is burned in a bomb calorimeter containing 2.00 × 10 2 g H 2 O. If the molar mass of this nutrient substance is 114 g/mol, what is the fuel value (in nutritional Cal) if the t ...
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