What is the formula of the oxide
A strip of electrolytically pure copper weighing 3.178 gram is strongly heated in a stream of oxygen until it is all converted to a black oxide. The resultant black powder weighs 3.978 g. What is the formula of the oxide?
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The half-life for the reaction at 550C is 81.3 seconds. How long does it take for 89% of phosphine sample to decompose?
90-g sample of a large biomolecule was dissolved in 23.0 g of carbon tetrachloride. The boiling point of this solution was determined to be 77.85°C. Calculate the molar mass of the biomolecule.
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Which of the following substances (with specific heat capacity provided) would show the greatest temperature change upon absorbing 100.0 J of heat?
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Calculate the change in Gibbs energy (b) Is the reaction spontaneous? (c) Calculate the total change in entropy of the system and the surroundings.
A solution is prepared by adding 30.00 g of lactose (milk sugar) to 110.0 g of water at 55 °C. The partial pressure of water above the solution is __________ torr. The vapor pressure of pure water at 55 °C is 118 torr. The MW of lactose is
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