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An iron ore was found to contain 92.0% pyrite (fool's gold). Pyrite has the formula FeS2and is 46.5% iron. How many grams of iron are there in 65.8 grams of iron ore?
How to tell if a compound is polar or non-polar when looking at its structure? Please answer in simple words rather than a whole bunch of scientific terms.
Calculate the molarity of a solution made by dissolving 12.1 grams of Na2CrO4 in enough water to form exactly 520 mL
The problem: CaCO3 can be roasted to produce CaO and CO2. This reaction is carried out in a flash connected to an open-end mercury manometer when the atmospheric pressure is 754 torr.
What is the theoretical yield of hydrazine in grams, prepared from the reaction of 100.0 mL of 0.690 M NH3
Write and balance net ionic equation for oxalic acid reacting with permanganate ion in acidic solution.
The total molarity of acid and conjugate base in this buffer is 0.100 M . A student adds 5.90 mL of a 0.380 M HCl solution to the beaker. How much will the pH change. The pKa of acetic acid is 4.760.
The density of a 16.0 mass % solution of sulfuric acid in water is 1.1094{g/mL} at 25.0 degrees celcius.
What is the de Broglie wavelength (in meters) of a baseball weighing 145 {g} and traveling at 159 km/h?
An aerosol can has a gas pressure of 144 kPa at 293 K. Calculate the pressure when the can is heated to 425 K.
a sample of an ethanol-water solution has a volume of 54.2 cm3 and a mass of 49.6g. what is the percentage of ethanol in the solution?
What precautions or what type of actions should the EH&S or FS professionals take when faced with a situation involving polychlorinated biphenyls (PCB's.)?
A 3.0 L bulb containing He at 129 mmHg is connected by a valve to a 2.0L bulb containing Ar at 110 mmHg. Calculate the partial pressure of each gas and total pressure after the valve between the flask is opened.
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