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A 195mg sample of a non-electrolyte isolated from throat lozenges was dissolved in enough water to make 10.0mL of solution at 25 degrees Celsius. The osmotic pressure of the resulting solution was 4.83atm. Calculate the molar mass of the compound.
Does the octet rule mean that a diatomic molecule has 16 valence electrons? Select from the following:
C2H4+3O2= 2CO+2H2O if 2.70 mol C2H4 is reacted with 6.30 mol O2 a. identify the limiting reagent
Assuming all gases are at the same pressure and temperature, how many liters of CO2 are formed from 15.0L of CO.
Please give reasons for compounds like silver sulfate or silver chloride to be insoluble that relate to ionic radius.
Define the normal boiling point of a liquid. Explain why atmospheric pressure affects boiling points of liquids.
a sample of a compound containing only magnesium and oxygen is found to have 194g Mg and 256g of O. What percentages of Mg and O in this compound?
What is the pH of an 85 mL solution containing .215 M NaHCO3 and .203 M Na2CO3?
Would the desired reaction occure if ethanol or t-butyl alcohol were used instead of isopropyl alcohol in the attempted photochemical dimerization of benzophenone?
Calculate the number of moles of Ascobic acid in the 50.00 ml Sample. Titration Volumes of KIO3 Initial Buret reading/ml trial 1=12.54 trial 2=8.78 Final buret reading/ trial 1=38.74 trial 2=34.93 Volume of KIO used/ml trial 1=? trial 2=?
How many moles of ions are in 1.60 mol of K2SO4?
Explain in general terms what a reference sample is and what its purpose is in spectrophotometry.
A helium-filled weather balloon has a volume of 815 L at 22 oC and 752 mmHg. It is released and rises to an altitude of 7.16 km, where the pressure is 364 mm Hg and the temperature is -25oC
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