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Octane is a major component of the gasoline for cats and trucks. When octane burns it produces carbon dioxide,water and energy. 43 500 kJ of energy is needed to drive a car 350 km. calculate how many grams of octane are needed to provide this amount of energy.
calculate the potential of the following two half- cells that are connected by a salt bridge: a galvanic cell with two platinum electrodes, the one on the left immersed in a solution that is 0.0301 M in Fe3+ and 0.0760M in Fe2+,
Simple distillation and Fractional distillation which method is more appropriate for separating the two unknown hydrocarbons
if 60 of heat is added to an aluminum can with a mass of 17.7 what is its temperature change? specific heat capacity
An analysis of her diet reveals an average daily intake of 80 grams of fat, 200 grams of carbohydrate, and 50 grams of protein. Calculate average daily kcalorie intake.
Determine the kinds of intermolecular forces that are present in each element or compound.
If every tablet in the problem abouveweights 650 mg. How many kilograms of excipient (lactose/talcum powder/filler) are needed to complete the whole batch?
Calculate the pH of a solution made up from 2.2 g of potassium hydroxide dissolved in 146 mL of 0.16 M perchloric acid. Assume the change in volume due to adding potassium hydroxide is negligible.
A gas expands and does P-V work on the surroundings equal to 343 J. At the same time, it absorbs 159 J of heat from the surroundings. Calculate the change in energy of the gas.
Which protein elutes first from a carboxymethyl cellulose ion exchange column with an increasing pH gradient
When a certain unknown hydrocarbon is completely combusted with excess oxygen, it is observed that 1.12 L of H2O gas and 3.36 L of CO2 are produced at STP. What is the empirical formula of the unknown hydrocarbon
Consider the voltaic cell below, which is symmetric except for the fact that [Cu2+] is 1.0 M on the left side and 0.01 M on the right. Which electrode is +, and what is Ecell?
Draw the Lewis Dot structure for the following, then determine the molecular structure, hybridization, bond angle and if it is polar or non-polar. N2H2.
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