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A gaseous sample of a compound has a gas density of 0.977 g/L at 710.0 torr and 100.0 C. What is the molar mass the compound? If this compound contains only nitrogen and hydrogen, and is 87.4% nitrogen by mass, what is the molecular formula of the compound?
How much hexanol was in the sample represented by this chromatogram? ( chromatogram shows retention time for butanol to be 10 min and retention time for pentanol to be 20min.
In the stock room you find a 12.0 M solution of HCl. How many mL of this solution should you dispense to make your diluted solution
the urge to breathe is increased and excessive CO2 is removed from the body D. respiratory tissue is damaged by oxidation E. no problems result from this situation
Identify the element of Period 2 which has the following successive ionization energies, in kJ/mol. IE1: 1314, IE2: 3389, IE3: 5298, IE4: 7471, IE5: 10992, IE6: 13329, IE7: 71345, IE8: 84087.
A solid sample containing some Fe^2+ ion weighs 1.062 g. It requires 24.12 mL 0.01562 m KNno4 to titrate Fe^2+ in the dissolved sample to a pink end point
Calculate the grams of iron ion present in a 1.25 mL of a solution that required 2.20mL 0f 0.002115 M KMnO4 in a titration going to a faint pink endpoint.
The pressure of a gas is 817 torr at 55°C. The quantity of the gas is fixed and the volume remains constant as the pressure is adjusted to 102 torr. What is the resulting temperature of the gas?
Consider the titration of 100.0 mL of 0.100 M H2NNH2 (Kb = 3.0 10-6) by 0.200 M HNO3. Calculate the pH of the resulting solution after 100.0 mL of HNO3 have been added
What pH range will allow the selective precipitation of one of the ions after saturation with H2S?
The solubility of strontium fluoride (SrF2) in water is 111.5 mg/L. What is Ksp for strontium fluoride (molar mass = 125.62 g)?
1. calculate the numbers of moles of 2-butanol that needed to dissolved in ethenol125gms just to form 12 m 2 butanol
Rate of Initiated Radical Polymerization, What are the basic steps of initiated radical polymerization? Derive the rate expression of initiated radical polymerization
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