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We most often express heat as kilocalories and kilojoules rather then calories and joules. When 1 pound of fat is burned in the body,9.4 kilocalories of energy is produced. Express that as a) calories b)kilojoules
Pure silver has a density of 10.50 g/cm3. A 22.8 gram sample reputed to be silver displaces 2.0 mL of water. Is the sample pure silver? and why?
the thermite reaction is performed using 8.6g Fe2O3 and 1.8g powdered Al metal. which reactant is in excess and by how much?
A certain reaction has an equilibrium constant of 300 at 25 degrees celsius and 309 at 35 degrees celsius. What is deltaH^0 per mole for this reaction
A chemical reaction is run in which 463 Joules of work is done by the system and the internal energy changes by -1027 Joules. Calculate the amount of heat transferred.
what is the formula for the complex formed from chromium (iv), two moles of water,
A critical reaction in the production of energy to do work or drive chemical in biological systems is the hydrolysis of adenosine triphosphate, ATP to adenosine diphosphate ADP as described by ATP
Considering the following equation, how many moles of water will be made by fully reacting 12 moles of NH3?
All organic (carbon-cointaining) products and cataloytic conditons must be shown as well as multiplel products. Studying for final. 2,4dimethypent-2- is the starting product
A gas occupies 672 mL at 785 mmHg. What volume would it occupy at 453 mmHg at constant temp??
Arsenic acid (H3AsO4) is a triprotic acid with Ka1 = 5. 10-3, Ka2 = 8. 10-8, and Ka3 = 6. 10-10. Calculate [H + ], [OH ? ], [H3AsO4], [H2AsO4? ], [HAsO42- ], and [AsO43- ] in a 0.62 M arsenic acid solution.
The specific heat cacpacity of solid copper metal is 0.385/Jg-K. How many joules of heat are needed to raise the temperature of a 1.55-kg block of copper from 33.0 0C to 77.5 0C
important to dry the hexane extract phase containing the yellow and green pigment prior to performing column chromatography.
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