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The combustion of a 0.440 g sample of ethanol (C2H5OH, molar mass = 46.07 g/mol) in a bomb calorimeter with a heat capacity of 5.278 kJ/degree C, causes the temperature to rise from 23.98 degree C to 26.45 degree C. What is delta E for the reaction of 1.00 mole of C2H5OH? C2H5OH(l) + 3O2(g) ? 2CO2(g) + 3H2O(l)
Two molecules are mirror images of one another, and they are not superimposable. What is the relationship between them? If two other molecules are mirror images of one another, and they are superimposable, then what is the relationship between them
57.0 mL of 3.50 M sodium hydroxide is combined with 35.0 mL of 1.80 M magnesium chloride. What mass in grams of solid forms?
What is the net charge at neutral pH of a tripeptide containing only alanine? How does the total number of negative and positive charges change following hydrolysis of the tripeptide
a solution of cyclohexane and an unknown solute freezes at 3.3c and 1atm of pressure. calculate the freezing point depresson of the solution
The gravitational force exerted on a solid object is 5 N. When the object is suspended from a spring scale and submerged in water, the scale reads 3.5 N. What is the density of the object
Given that the ionizable H atoms are associated with carboxyl groups, draw a plausible structure for maleic acid.
how might the addition of water helped convert this by product into the desired product?
Calculate the intermolecular collision frequency and the mean free path in a sample of helium gas with a volume of 5.0 L at 27 degrees Celsius and 3.0 atm.
Write the equations that represent the first and second ionization steps for selenic acid (H2SEO4) in water.
Order these five gases that occur in the troposphere from most abundant to least abundant: Rn, CO2, CO, N2, Ar and O2.
Why does the same amount of liquid when left in a wider and flatter container evaporate quicker than when left in a narrower and deeper container?
what is the frequency of the photons emitted by hydrogen atoms when they undergo transistions from n=5 to n=3
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