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A beaker contains a 25% by mass solution of aqueous propylene glycol. If a chemist gently heats the beaker in order to evaporate all the water away without evaporating any of the propylene glycol, all of the pure propylene glycol should remain in the beaker.
1. What mass of pure propylene glycol can be recovered from 454 g of 25% solution?
2. What mass of 25% solution should be heated in order to obtain 5.0 of pure propylene glycol?
3. What mass of water will be removed when 40.0g of 25% solution is heated?
4. What mass of water will be removed when enough 25% solution is heated up to produce 2.00g of pure propylene glycol?
Determine the value of Kc for the following reaction if the equilibrium concentrations are as follows: [N2]eq = 3.6 M, [O2]eq = 4.1 M, [N2O]eq = 3.3 × 10-18 M.
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Volume of water used, mL: 75.0ml Initial temperature of water: 23.4 degree celsius Mass of salt taken, g: 5g Moles of salt taken, mol: 0.0625mol Highest/lowest temperature,: 24.0/20.1 Calculate heat flow,J and calculate the Enthalpy change,KJ/mol:..
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Draw a curve of pH vs mL titrant added for the titration of a strong acid with a strong base. What is the pH at the endpoint
A two tablet sample of a vitamin/mineral supplement weighting 6.08 g was wet ashed to eliminate organic mattter, complexed with a highly colored ligan and then diluted to 1.00L volume. two 10.00 ml aliquots were then analyzed. calculate the averag..
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Draw (S)-3-hexanol, then indicate the stereochemistry of the product formed when it is treated with each of the following reagents
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