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How many moles of oxygen (O) are in 1 mole of calcium carbonate (CaCO3)?
A certain first-order reaction has a rate constant, k, equal to 2.1 x 10-5 at 355 K. If the activation energy for this reaction is 135 kJ/mol compute the value of the rate constant (s-1) at 550 K.
In the directions it states "weigh about 5 grams of sodium chloride". Give minimum and maximum amounts of sodium chloride that would satisfy these instructions.
The amount of lead in a aqueous sample is determined by atomic absorption spectrometry. Two standard solutions are prepared and used to make a calibration curve, and then the absorbance of the sample is measured.
Calculate the molar concentration of HCl in a solution that has a specific gravity 1.185 and is 36.5% (w/w). Prepare from this bottle 1 L of 0.1 HCl solution.
Which has higher boiling point
on a smoggy day in a certain city the ozone concentration was0.34 ppm by volume. calculate the partialpressure atm of
Write a balanced chemical equation that describes the reaction of iron metal with HCL. Identify the oxidizing and reducing agents in your blanced equation.
Assume it took the entire allotted time. If we used anisole instead of methyl benzoate to run an analogous reaction, how much time would a similar nitration reaction take.
Problem- How many seconds does it take to deposit a 1.63 g of Ni on a decorative drawer handle when 17.8 A is passed through a Ni(NO3)2 solution
analysis. To a 500 mL air sample at 700 torr and 38 deg C, she adds 20.00mL of 0.01017 M aqueous iodine which reacts as follows:
A 46.2mg sample of phosphorus reacts with selenium to form 135mg of the compound. What is the empirical formula of the phosphorus selenide
What is the oxidation half reaction, Reduction half reaction, and overall reaction for Chloride + permanganate --->
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