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A sample of vanadium haveing 5.67 grams of mass upon heating combined with oxegen of 4.45gramsto make vanadium oxide. determine determine the emperical formula for this compound?
1) Draw the form (structure) of ascorbic acid that is present at physiological pH (in the body; pH= 7.4). What diseases can be prevented and/or treated by the intake of ascorbic acid?
Determine the heat of combustion per gram of octane and the heat of combustion per mole of octane?
For the reaction, calculate how many moles of the product form when 0.048 moles of O2 completely reacts. Assume that there is more than enough of the other reactant. 4Fe + 3O2 ---> 2Fe2O3
what is the maximum wavelength of light that can be used to observe the photoelectric effect? answer in nm.
At 25oC, the vapor pressure of the cyclohexane liquid "C6H12" is 70.0 mmHg and that of the toluene liquid "C7H5CH3" is 22.0 mmHg. The mole fraction of toluene in an ideal solution of cyclohexane and toluene that has a vapor pressure equals to 53.2..
Hexane has a density of 0.659g/mL to the third at 20 degrees C. How many mL are needed to have 30.0g of liquid.
A sample of oxygen that occupies 2.5 × 10-6 mL at 508 mm Hg is subjected to a pressure of 1.2 atm. What will the final vol ume of the sample be if the temperature is held constant?
Calculate the amounts of C 7 H 8 , C 7 H 16 , and H 2 in the output stream express your answer (in mol s -1 ).
Rutherford result also showed that the most of the atom's mass is located in the nucleus which has a very small volume.
What are the advantages and disadvantages of Lewis, condensed, and line-angle structural formulas
if the formula for magnesium fluoride is mgf2 and the formula for potassium chlorate is kclo3 then what is the formula
Calculate the partial pressure (in atmospheres) of each gas, Assuming that the total pressure of the gases is 1.34atm{rm atm} and that their mole ratio is 94 : 4.0 : 1.5 : 0.50,
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