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Question- Draw the orbital structures (single bond and Pi bond ) in the molecules C2H6 and C2H2. Discuss the difference between a single bond and a Pi bond and the conditions under which they form
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a volume of 125 ml of rm h2o is initially at room temperature 22.0rmcircc. a chilled steel rod at 2.00rmcircc is placed
Calculate the freezing point of a solution of 500.0 g of ethylene glycol (C2H6O2) dissolved in 500.0 g of water. Kf = 1.86 degrees C/m and Kb
The combustion of .1703 mole of hydrocarbon produces 12.27g H2O and 22.48g CO2. What is the molar mass of the hydrocarbon?
When all of the liquid was turned to vapor, the stopper was pushed down tight as well as it was determined later on that only 0.570 grams of liquid condensed in the flask when the apparatus returned to room temperature. Find out the composition of..
when filled with water (d=1.00 g/cm 3) the flask and it contents weigh 518.3 g. what is the flask's volume?
A calorimeter that contains 2500 g of surrounding water is used to measure the heat associated with the reaction of 520 g of a reactant. Calculate the energy, in joules per kilogram of reactant, associated with the reaction
you wash dishes for a chemistry laboratory to make extra money for laundry. You earn 6 dollars/hour, and each shift lasts 75 minutes. Your laundry requires 6 quarters/load.
when separated from a water solution cuso4 forms a hydrate with 5 water molecules per formula unit. if 36 g of
required to exactly titrate the Fe2+ in a sample. How many moles of Fe2+ were in the sample?
A certain indicator HIn has a pKa of 3.00 as well as a color change becomes visible when 7.00% of the indicator has been converted to IN-. Explain at what pH is this color change visible
Calculat the number of mol atoms of H present in 1 molecule of aspartame
In spectroscopy, the ratio of the intensity of radiation that passes through (I) the sample and the intensity of the radiation (Io) that is directed at the sample being analysed is called
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