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Geologists measure conductive heat flow out of the earth by drilling holes (a few hundred meters deep) and measuring the temperature as a function of depth. Suppose that in a certain location the temperature increases by 20°C per kilometer of depth and the thermal conductivity of the rock is 2.5 W /m·K. What is the rate of heat conduction per square meter in this location? Assuming that this value is typical of other locations over all of earth's surface, at approximately what rate is the earth losing heat via conduction? (The radius of the earth is 6400 km.)
What will be the effect on your final %carbonate if a drop of HCl is spilled, and is not delivered to the test tube? Explain reasoning.
what would be the chemical equation to this problem? In an investigation of the reaction between copper(II) ions, Cu2+, and hydrazine, N2H4, in alkaline conditions the following observations were made: 25 mL of a solution containing 25 g/L CuSO4.5..
Explain a chemist isolated an aromatic compound of molecular formula C6H4Br2. She carefully nitrated this compound as well as purified three isomers of formula C6H3Br2NO2. Intend a structure for the original compound and the three nitrated derivat..
What is the chemical name for H2CS? The worksheet that I was given tells me to find the formula for a list of compounds but one of them is already listed as the formula, H2CS and I was wondering what the name of it is?
If 5.36 103 kg each of NH3, O2, and CH4 are reacted, what mass of HCN and of H2O will be produced, assuming 100% yield?
Find out the change in the moles of gas for each of the following reactions and decide if the entropy increases, decreases, or has little or no change.
The accepted value (mu) for a standard sample of chloride was 34.63 percent chloride. Triplicate analysis of this material by a new procedure yielded a mean value of 34.71 and an estimated standard deviation of 0.04
which of the following electron configurations represent an excited state?
If a Nicotinic acid, HC6H4NO2 is a weak monoprotic acid. A 5.7x10-2 M nicotinic acid is 1.6% ionized. Explain what is the Ka for this acid
Calculate the theoretical amount of 2.5 M NaOH (10%) solution needed to convert the benzoic acid to its water-soluble salt. Is the combined volume of NaOH used in the extractions sufficient for complete deprotonation of benzoic acid
A cup of brewed coffee is made with 9.0 grams of ground coffee beans. If a student drinks four cups of gourmet coffee a day, how much does the student spend on a year's supply of gourmet coffee that sells for $8.99 a pound
Question- What mass of HI should be present in 0.200L of solution to obtain a solution with each of the following pH's
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