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While 2.0 grams of an electrolyte was dissolved in 25.0 grams of water the resulting solution was found to have a molarity of 0.815M and a molality of 0.800m.
a) Compute the molecular weight of the electrolyte.
b) Compute the density of the aqueous solution of the electrolyte
The following heats of formation are used to find the change in enthalpy for the formation of tin chloride in the following reaction Sn (s) + 2Cl2(g) --> SnCl4(l).
How many grams of Ba(BrO)2 could be produced through the complete reaction of 50 mL of .40 M HBrO? Use the balanced equation Ba(OH)2 + 2 HBrO = 4H2O + Ba(BrO)2
a mixing process has as its inputs two streams each containing water and fiber. the first stream has 10 fiber and a
A compound of carbon and hydrogen contains 80% carbon by mass. What is the mole ratio of carbon to hydrogen in this compound
Benzene is an organic liquid that freezes at 5.5 degrees celsius. how much heat is evolved when 25.5g of benzene freezes at 5.5 degrees celcius. (the molar heat of fusion is 9.94kJ/mol and the molar mass of benzene = 78.0g/mol)
An unknown compound contains carbon, hydrogen, oxygen, and sulfur atoms. When a 10.00 mg sample of the unknown compound was combusted, it produced 16.27 mg of CO2, 5.55 mg of water, and 7.90 mg of SO2. What is the empirical formula of the unknown ..
Determine the atomic packing factor (APF) of the simple hexagonal crystal structure assuming the lattice parameter a is equal to 2R and the lattice parameter c is equal to 1.5 a. Assume one atom on each lattice point
To what general class of mechanisms does the attack of bromide ion, Br-, on the cyclic bromonium ion
The oxidation of gold metal by aqua regia (i.e., royal water) results in the production of nitrogen dioxide and gold(III) ion, in the primary step. Aqua regia is a dangerous mixture of 1 part nitric acid and 3-9 parts hydrochloric acid.
Humans consume glucose, C6H12O6, to produce engery. the products of glucose consumption are CO2 and H2O. C6H12O6(s)+6O2(g)--->6CO2(g)+6H20(g)
A ground state hydrogen atom absorbs a photon of light having a wavelength of 93.06 nm. It then gives off a photon having a wavelength of 1.0 × 103 nm.
the reactant concentration in a first-order reaction was 6.80times10-2 m after 10.0 s and 4.40times10-3 m after 65.0s.
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