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A 28.6 g sample of ethylene glycol, a car radiator coolant, loses 700. J of heat. What was the initial temperature of ethylene glycol if the final temperature is 32.5°C (c of ethylene glycol = 2.42 J/gK)?
One piece of copper jewelry at 108 degrees Celsius has exactly twice the mass of another piece, which is at 44 degrees Celsius. Both pieces are placed inside a calorimeter whose heat capacity is negligible. What is the final temperature inside the ca..
Calculate the mass of Zinc hydroxide (Zn(OH)2) that will dissolve in 500ml of pure water. The solubility constant for zinc hydroxide is 4.2*10^-17
gallium arsenide is a common semiconductor. this material becomes a conductor when irradiated with infrared light whose
You have separate solutions of HCl and H2SO4 with the same concentrations in terms of molarity. You wish to neutralize a solution of NaOH. Which acid solution would require more volume (in mL) to neutralize the base
Determine the oxidation state for the following element in the compounds indicated;sulfur in H2SO4,nitrogen in NO2
Draw the Lewis structure for each of the following molecules or ions. Include all lone pairs of electrons. Show the formal charges of all atoms in the correct structure.
calculate collapse energy i.e. pe change of world trade towers 410 m tall total mass 1.25 mega tons calculate change
a power plant with a design capacity of 600 mw is operated with 36 thermal efficiency and operated at 70 of the design
How are fatty acid oxidation and different from one another, Metabolism uses various ways to ensure that 2 opposing pathways do not occur at the same time. For the following pair of pathways list 2 ways (different cell location
what are the concentrations of the significant ionic species of a 0.100M solution of lysine at pH=4
if 15.7g of cacl2 is dissolved in 1.0l of 1.00m nacl solution assume no change in volume what is the molar
If you want to dope GaAs to make an p-type semiconductor with an element to replace As, Which element would you pick? A) Si B)Se C)N D)S E)P
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