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Problem- Liquid sodium is being considered as an engine coolant. How many grams of liquid sodium (minimum) are needed to absorb 1.40 MJ of energy (in the form of heat) if the temperature of the sodium is not to increase by more than 10.0 °C? Use CP = 30.8 J/(K•mol) for Na(l) at 500 K.
How do I yet start setting this up? Thank you
when 2.45 g of an unknown weak acid ha with a molar mass of 85.0g mol is dissolved in 250.0g of water the freezing
Complete the following acid-base reactions. Write the net ionic form. Determine if the solution made by mixing equal amounts (moles) of these acids and bases will be acidic, basic or neutral. Explain, show relevant equations
As a part of this exercise, you will need to prepare 100 mL of a 0.1 M phosphate buffer at pH 7.5, and you need to calculate the amounts of NaH2PO4 and K2HPO4 that you need to use in your buffer.
When 2.00 mol of NOCl(g) was heated to 225 degrees celcius in a 400L steel reaction vessel, the NOCl partially decomposed according to the equation 2 NOCl(g) -->2 NO(g) + Cl2(g)
You add an excess of solid MX in 250 g water. You measure the freezing point and find it to be -0.028 degrees celsius. What is the Ksp of the solid. Assume the density of the solution is 1.0 g/cm^3.
Four different amino acids can be combined in different sequences to form how many different tetrapeptides?
Determine All the products of acid-catalyzed dehydration of 2-pentanol. Show the mechanism for one of the products.
Disregarding any other losses and treating the animal as a closed system, what was the change in internal energy of the animal?
A bomb calorimeter whose components have a heat capacity of 6.66 kJ/°C is filled with 913 g of water. (The amount of water is not constant from experiment to experiment.
Compare the primary, secondary, and tertiary structures of a protein with the structure of a telephone
What is the pH of a solution that contains 0.15 M HC2H3O2 and 0.28 M C2H3O2-. Use Kb = 5.6 x 10-10, for C2H3O2-. pH =
Construct a table that shows the relationship among the group number, valence electrons lost or gained and the formula metallic
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