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A procedure was performed on a 0.49 g sample of copper oxide and 0.40 g of dry copper metal was recovered. Show all the steps solving for the empirical formula of copper oxide and keep significant figures in mind.
how much energy is required to heat an iron nail with a mass of 7g from 25 degrees celcius until it becomes red hot at 750 degrees celcius?
Draw the flow of e- and the products of the Methoxide Ion and water including formal charges on all compounds.
Predict the fraction of octahedral holes and tetrahedral holes that are filled by the various cations. octahedral holes filled with aluminum ions and tetrahedral holes filled with magnesium ions.
What is the difference in the chemiacl potential of this gas and an ideal gas at the same pressure and temperature?
The molecules CH4 and CH3Cl both have tetrahedral shapes. Why is CH4 nonpolar whereas CH3Cl is polar
The molar heat capacity of silver is 25.35 J/mol * C. How much energy would it take to raise the temperature of 8.60 g of silver by 11.1 C?
Estimate the pH, and the concentrations of all species in a 0.300 M phosphoric acid solution. pKa1: 2.16 pKa2: 7.21 pKa3: 12.32 Hint: Convert the pKa values to Ka values
What is the number of chlorine atoms are in 5.0 g chloral hydrate?
A student wrote the reaction scheme below for the grignard synthesis of triphenylmethonal. Explain to the student why this representation of the reaction would not yield the desired product
A stream of propane is throttled from 20 bar and 518 K to 0.42 bar. This process is irreversible due to frictional losses at the nozzle.
Without consulting the table of acid-dissociation constants, match the following acids to the given Kal values. Drag the appropriate items to their respective bins.
Cinnamon owes its flavor and odor to cinnamaldehyde (C9H8O). Determine the boiling point elevation of a solution of 89.3 mg of cinnamaldehyde dissolved in 1.00 g of carbon tetrachloride (kb = 5.03 C/m)
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