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A baked cake is taken out of a 400 degrees oven as well as placed on a table in a 65 degree room. Twenty minutes later the temperature is 320 degrees. It cools according to newtons law. What the temperature of the cake after 30 minutes? All temperature is in Fahrenheit.
what is the calculated value of partial pressure of o2 in acid mine water of ph 2 in which fe2+=fe3+.
-an experiment was done using NaCl and KCl for solubilty purposes, would the results be different if Nacl and LiCl were used instead?
The standard free energy of formation of gaseous hydrogen iodide is 1.30 kJ/mol at 25°C. Find Kp for the reaction 2HI(g) -> H2(g) + I2(s) at this temperature.
Write the equations for the substitution reaction of methane with bromine under the following conditions.. (UV=UV light). write no reaction for reactions that will not proceed
What happens to recrystallization if crystallization is accelerated by immediately placing the flask of hot solution from the gravity filtration into the ice-water bath
A diprotic acid, H2A, has the following ionization constants: Ka1 = 1.1 multiplied by 10-3 and Ka2 = 2.5 multiplied by 10-6. In order to make up a buffer solution of pH 5.80, which combination would you choose, NaHA/H2A or Na2A/NaHA?
Explain why the colour of the light emitted by an element in the gaseous state is characteristic of the element & explain with a sketch diagram how a hydrogen atom, which has only one electron, has so many spectral lines.
A perfectly square piece of gold foil measuring 3.3 mm on an edge is isolated from a bottle of liqueur
calculate the melting point of ice under a pressure of 10 mpa. assume that the density of ice under these conditions is
if temperature and pressure remain constant how does the volume of gas sample vary with the number of moles of gas
The reaction vessel is charged initially with SO3(g) and NO(g), each at a partial pressure of 0.500 atm. In the space below, enter the equilibrium the partial pressure of SO2(g) in units of atm
The majority of industrial method for the preparation of elemental phosphorus is heating a mixture of phosphate rock, carbon, and sand in electric furnace. The chemical reactions can be represented by 2Ca3(PO4)2 + 6SiO2 ? 6CaSiO3 + P4O10 and P4O10..
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