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How many moles of molecular oxygen are consumed by the complete combustion of one mole of the following compound? Hint: A balanced chemical reaction is necessary to answer this question.
What difference in their structural properties renders the triethylene glycol the only one that will work?
When M2S3 is heated in air, it is converted to MO2. A 4.000g sample of M2S3 shows a decrease in mass of .277 g when it is heated in air.
A flask contains 0.110 mol of liquid bromine, rm Br_2. Determine the number of bromine molecules present in the flask.
The atmosphere becomes colder at higher elevation. As an average the standard atmospheric absolute temperature can be expressed as Tatm = 288 - 6.5 × 10?3 z, where z is the elevation in meters.
A chemist dissolves 0.099 g of CuSO4 · 5 H2O in water and dilutes the solution to the mark in a 500-mL volumetric flask. A 36.1-mL sample of this solution
How do you calculate the percent by mass of volatile water in hydrated salt and average H20 when the mass of hydrated salt
The synthesis of Amyl acetate by alcohol and anhydride, there are some chemicals be provided: Potassium carbonate, Calcium carbonate, Sodium sulfate
A nitric acid solution containing 71.0% HN)3 (by mass) has a density of 1.42 g/mL. How many moles of HNO3 are present in 1.00L of this solution?
65.50 mL of 0.161 M HF is titrated with 0.1200 M NaOH. What is the pH at the equivalence point? (Ka for HF is 6.8 x 10-4)
aluminum may be formed by the passage of 60,714 C through an electrolytic cell that contains a molten aluminum salt.
How many moles of BCl3 are needed to produce 25.0 g of HCl(aq) in the following reaction?
What mass of I2 is needed to add to a 250 mL volumetric flask to produce a solution that is 0.20 M? (Enter unit as g.)
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