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How much heat (in ) is evolved in converting 1.00 of steam at 145.0 to ice at -50.0? The heat capacity of steam is 2.01 and of ice is 2.09.
What are the characteristic absorption regions for a) carbonyl groups and b) alcohols (RO-H), Are these absorptions a result of stretching vibrations or bending vibrations
The pH increased from 5.8, the normal pH of a cigarette , to pH 6.4 by addition of ammonia. How many moles of ammonia are required to produce this pH change per cigarette (volume approx. 5ml)?(Assume that no unprotonated ammonia will exist at pH 6..
The biochemical oxygen demand (BOD) is the capacity of organic and biological matter in natural water to consume oxygen. It is determined experimentally by measuring the oxygen concentration in a sealed sample before and after a 5-day incubation p..
What is the freezing point of a solution of 5.00 g of benzophenone (C13H10O) in 100 mL of benzene (benzene density = .887 b/mL). Pure benzene has a melting point of 5.50 C and the Kf of benzene is 5.12 C/m
Enter the half-reactions and the balanced cell reaction for the following galvanic cells. (Enter states of matter in your answer.)
What property of the atom did Moseley associate with the wavelength of X-rays emitted from an element in his experiments?
A sample of 0.368 mol of a metal M reacts completely with excess fluorine to form 28.7 g of MF2. what element is represented by the symbol M?
water vapor and nitrogen dioxide gas no2 are combined to manufacture ammonia. a byproduct of this reaction is oxygen
Draw a stick model of a water molecule. Sketch a space filling model of a water molecule, show polarity by labeling positive and negatively charged regions of the molecule.
Silver chloride will precipitate out of solution, leaving an unsaturated solution of AgCl. D) Nothing will happen since NaCl and AgNO3 are both soluble compounds.
Iron forms a magnetic oxide with the formula Fe3O4 that contains both Fe2+ and Fe3+ ions. What is the average oxidation number of iron in this oxide
When adding the solution of HNO3 from the buret in Step 14 to beaker 4, you know that you added 2.5 mL instead of 1.5 mL for a total volume of 11.0 mL. How would the calculated value of the equilibrium constant be affected for this sample?
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