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A compound containing selenium also fluorine is decomposed in the laboratory and produces 2.231 g of selenium also 3.221 g of fluorine. Determine the empirical formula of the compound.
The final temperature of the mixture is 27.0 degrees C. What is the heat capacity of the unknown substance. Express the answer in TWO significant figures.
A 0.468 mol of O2 gas has a volume of 11.5 L at a certain temperature and pressure. If all this O2 were converted to ozone (O3) at the same temperature and pressure, what would be the volume of the ozone. 3O2?2O3
A student heated a 4.901 g sample of hydrated iron chloride. After heating, the anhydrous iron chloride has a mass of 3.010 g. Calculate the percentage by mass of water in the hydrated compound.
An organic compound has a molecular mass of 294.2 and contains 81.58% carbon by mass. How many carbon atoms are in each molecule of this compound
A student carried out the synthesis of aspirin starting with 3.48g of salicylic acid. After carrying out the reaction, recrystallizing and then drying the product, the student obtained 3.30g of aspirin. Calculate the student's percent yield.
When the body metabolizes glucose water and carbon dioxide are produced according to the following equation. C6H12O6 + 6 O2 --> 6 CO2 + 6 H2O
calculate the external pressure that must be applied to seawater, 1.14 M total ion concentration at 10 degrees celcius if the maximum concentration allowed in the product water is 166 mg/L
If a molecule containing only oxygen and nitrogen is 36.8% Nitrogen by mass, what is the emperical formula
a dancehall contains 173 men and 238 women. a certain promenade calls for the formation of groups with each group
How many milliliters of 0.5 mg/mL BSA will you use in each tube to get the range of 0-50 micrograms that you want?
If 29.7 mL of 0.0205 M KOH us required to completely neutralize 25.0 mL of a HC2H30 solution. What is the molarity of the acetic acid solution
cis-dibenzoylethylene is converted to a more stable, new product, ethyl 4-phenyl-4-phenoxy-3-butenoate. What is the structure of the new product
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