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Question- List five observations that indicate a chemical reaction has occurred. in each case identify an example of the observation.
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The pH of coffee is approximately 5.0. How many times greater is the [H3O+] in coffee than in tap water having a pH of 8.0
How many orbitals in an atom can have each of the following designations? (a) 3d (b) 4f (c) 3p (d) n = 3
A compound has the empirical formula CoCl3 x 4NH3. One mole of the compund yields one mole of silver chloride when treated with silver nitrate. Ammonia is not removed by treatment with concentrated sulfuric acid. The formula for the compund is bes..
Question- What is the density (in g/L) of a sample of nitrogen gas that occupies a volume of 7.04L at a pressure of 4.02 atm and a temperature of 33.6oC
suppose you are trying to determine the melting point of a compoundand the compound turns from white to brown before
What is the value of deltaH0 (in kJ) for the reaction described below. Assume the reaction is performed at 250C. C2H2 (g) + 2H2 (g) -----> C2H6 (g) a. - 248 b. - 311 c. - 173 d. 236
the xy-plane and the C-atom skeleton lies on the x axis, what is the hybridization of C for the right-side CH2 group?
2.20g of solid NaOH are added to 250ml of 0.10M FeCl2 solution. Given that Ksp for Fe(OH)2 is 1.6x10^14, calculate the following. The weight of Fe(OH)2 formed
determine the mass of carbon dioxide produced when .85 grams of butane reacts with oxygen according to the following
a sample of the sugar d-ribose c5h10o5 of mass 0.727 g was placed in a calorimeter and then ignited in the presence of
An oxygen molecule is adsorbed onto a small patch of the surface of a catalyst. It's known that the molecule is adsorbed on 1 of 36 possible sites for adsorption
At 650K MgCO3(s)(----)MgO(s)+CO2(g) has Kp=0.026. A 10L container at 650K has 1.0 g of MgO(s) and CO2 at P=0.0260 atm. The containeer is than compressed to a volume of 0.100L. Find the mass of MgCO3 that is formed
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