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Aluminum displaces cobalt from a 0.2 M solution of cobalt(II) perchlorate. Cobalt does not displace chromium from a solution of 0.2 M chromium (III) nitrate. Aluminum metal does not displace calcium from a 0.2M solution of calcium nitrate. Aluminum metal displaces chromium from a solution of 0.2 M chromium (III) nitrate. Write an activity series, most active to least active, based on this data.
In an experiment to calculate he enthalpy change of combustion of a fuel, 1.5g (0.0326 mol) of the fuel was used to heat 200g of water. The temperature of the water rose from 25'C to 55'C. The specific heat capacity of water is 4.18 J/Kg.There is a s..
After fasting state, when a person has been well fed, what are the metabolic activities that take place?
Amino acids are the key components of proteins. When fully protonated, amino acids have similar chemical reactions as diprotic acids (such as found in H2CO3). For example, alanine udergoes the following reactions:
How many mL of 12.1 M HCl solution do you need to dilute to make 100 mL of a soltion with 10 wt%
Draw all of the eclipsed and staggered conformations for the c3-c4 bond in hexane starting with the conformation that has the lowest energy.
Calculate the number of moles of potassium chloride formed in the reaction. Calculate the ratio moles potassium chloride : moles potassium carbonate. Calculate the molar mass of each of the following, showing your work.
The temperature of the calorimeter rises from 22.5 to 25.7 degrees C. Find the nutritional caloric content (Cal/g) of peanut butter. BASED on your calculation, how many Calories are in on serving of peanut butter
butyric acid is responsible for the foul smell of rancid butter. the pka of butyric acicd is 4.84.a calculate the pkb
A mixture of CuSO4 * 5H2o and MgSO4 * 7H2O is heated until all water is lost. If 5.020g of the mixture gives 2.988g of the anhydrous salts, what is the percent by mass of CuSO4 * 5H2O in the mixture
write a balanced molecular equation to represent the neutralization between NaOH and Molybdic acid.
A 0.140-mole quantity of CoCl2 is added to a liter of 1.20M NH3 solution. What is the concentration of Co^2+ ions at equilibrium. The formation constant of Co(NH3)6^3+ is 5.0*10^31.
How much heat is lost when a 640 g piece of copper cools from 375 oC, to 26 oC? (The specific heat of copper is 0.387 J/g . oC)
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