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When 14.4g of carbon were burned in the presence of 55.1g of oxygen, 16.7g of oxygen remained unreacted. What mass of carbon dioxide was produced?
Calculate Ka for hydrogen peroxide. you may use the reactions given on the data sheet, Kw=1.0x10^-14. Assume that hydrogen peroxide is a monoprotic acid.
in most of its ionic compunds cobalt is either coii or coiii. one such compound containing chloride ion and water of
the side of the coil which cuts magnetic flux link from the north pole first becomes the live wire. Is there any reason behind that or is it just a natural phenomena?
The current dietary recommendation is to consume less than 0.1 mol of sodium per day. one teaspoon of table salt.
ag has two isotopes with the masses 106.90509 and 108.9047 the average atomic mass of ag is 107.8682 amu. what is the
What is the final temperature in a squeezed cold pack that contains 40.0 g of NH4NO3 dissolved in 135 mL of water? Assume a specific heat of 4.18 J/(g·°C) for the solution, an initial temperature of 25.0°C
consider a solution of a weak acid at a ph equal to its pka. by how much would the ph change and in which direction if
A compound of forumula C14H12 gave a positive Baeyer test and burned with a yellow, sooty flame. Treatment with ozone followed by hydrolysis in the presence of zinc gave formaldehyde as one of the products.
Using the following spectral information, determine the name of unknown organic compound A. For full credit, explain why/how the spectral information led you to your answer.
the temperature of the resulting solution rises from 25.00°C to 37.90°C. If the specific heat of the solution is 4.18 J/(g · °C), calculate ?H for the reaction, as written.
What is the difference between a certain number and an uncertain number in a measurement. which certain and uncertain numbers count as the significant figures of a measurement
Specific heat, Cs, for Ag is 0.233 Jgˆ-1 Kˆ-1. If temperature of 0.350 mol silver metal changed from 0.00 °C to 26.0 °C, Explain how much heat was absorbed by the silver metal
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