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Using the peak intensities provided below for the molecular ion region of an unknown, draw the corresponding mass spectrum. Be sure to label the axes and any peaks. Based on the isotopic peak intensities, suggest a composition and structure for the molecule. NOTE: You only need to consider C, H, N, O, Cl, and Br.
m/z (intensity): 136 (743), 137 (25), 138 (724), 139 (24)
A flask has a mass of 78.23 g when empty and 593.63 g when filled with water. When the same flask is filled with concentrated sulfuric acid, H2SO4, its mass is 1026.57 g
The reaction CH3CH2NO2 + OH- → H2O + CH3CHNO2- obeys the rate law d[A]/dt = -k[A][OH-], where A denotes CH3CH2NO2. It takes 0.5 min for one percent of the A to react at 25°C.
Assuming gasoline is 89.0% isooctane, with a density of 0.692 g/mL, what is the theoretical yield (in grams) of CO2 produced by the combustion of 1.56 x 1010 gallons of gasoline
The concentration fo certain sodium hydroxide solution was determined phthalate(abbreviated as KHP). KHP is an acid with one acidic hydrogen and a molar mass of 204.22 g/mol.
a student dissolves two moles of mgno32 into a beaker of water. how many nitrate ions are present in the
Calculate the concentration of each ion present in a solution that result from mixing 50 mL of a .20 M NaCLO3 solution with 25 ml of a .20 M Na2SO4. ASsume that the volumes are additive.
An excess of aluminum foil is allowed to react with 225 mL of an aqueous solution of HCl (d = 1.088 g/mL) that contains 18.0% HCl by mass.
The lower flammability limit (LFL) for a gas is the minimum concentration of the gas, in air, below which there is too little fuel to support combustion.
What is the pH of a solution created by mixing 183 mL of a 0.94 NaHSO3 solution with 110 mL of a 1.12 M Na2SO3 solution
the following compounds in order of increasing boiling point, and give reasons for your answer.
Calculate the empirical formula and then determine the molecular formula of this compound using the given molar mass. b) Draw three lewis structures for molecule that satisfies the octet rule for each atom.
Consider the reaction of sulfur dioxide and water, which is represented by the following equation: 2SO2(g) + 2H2O(g) ® 2H2S(g) + 3O2(g) How many moles of electrons are transferred according to the equation that is written
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