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Heart pacemakers are often powered by lithium-silver chromate "button" batteries. The overall cell reaction is: 2 Li(s) + Ag2CrO4(s) ? Li2CrO4(s) + 2 Ag(s) The overall cell potential is 3.5V. What is the half-cell potential for the follow half reaction? Ag2CrO4(s) + 2e? ? 2 Ag(s) + CrO4-2?(aq)
what is the average power (energy per unit time) in units of watts (1W = 1J/s) associated with such a pulse? b. How many photons are emitted in such a pulse?
that the reaction was endothermic. If the enthalpy of reaction is negative, then we say that energy was released or that the reaction was exothermic. Most chemical reactions are exothermic.
If there is a phasechange you need to then write a net ionic equation and list the spectator ions barium chloride plus silver nitrate equals barium nitrate plus silver chloride
An athlete wants to acquire red blood cells from a donor with the same blood type. Taking into consideration that blood is composed of three components, plama, red blood cells, and leukocytes. what instrument have used in our lab experiments that ..
potassium hydrogen phthalate, a monoprotic acid with a molecular weight of 132 g/mol
Explain why the melting point of 4-bromonitrobenzene is considerably higher than that of the 2-isomer
When 49 mL of a solution containing 3.1 M AlCl3 is diluted to 53 mL, a dilute solution is formed. How many moles of Al3+ ions are contained in 14 mL of the dilute solution
Hypervenilation raises the pH of the blood in a condition known as respiratory alkalosis. Common treatment is to have the patient breathe into a paper bag,
write the most stable lewis structure for C2F4 and state the hybridization of the carbon atom
Given the stepwise formation constants for Zn(NH3)4 complex are logKf1=2.18 , logKf2=4.43 , logKf3=6.74 , logKf4=8.70 and the pKb fo ammonia is 4.76.
What is the mole fraction of ethanol in a solution made by dissolving 14.6 g of ethanol in 53.6 g of water?
As the liquid vaporizes the plunger is pushed out. At equilibrium, the plunger reads 5.46 mL of gas. Atmospheric pressure is 740. mmHg. What is the approximate molar mass of the compound (in g/mol)?
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