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Question- If all of the energy from decay of the K-40 (potassium-40) in one banana your body could be captured and converted into electrical energy, 1) How many bananas would be needed to power a 100W light bulb
Calculate the energy produced when 15 grams of liquid methanol (CH3OH) is completely burnt in air to produce carbon dioxide gas
Problem- you need to prepare 100 mL of a pH=4.00 buffer solution using .100 M benzoic acid (pKa = 4.20) and .160 M sodium benzoate, mL Benzoic acid =
Calculate the pH of a solution containing 25.00 mL of 0.12 M formic acid (Ka = 1.7 x 10^-4) to which the following amounts of 0.10 M NaOH have been added
A balloonn containing a sample of Helium gas is warmed in an oven at constanst pressure. If the balloon measure 1.25 l at room temperature (20c), what is it volume at 98 c
What other resonance structures are possible that satisfy the octet rule?
How many milliliters of 3.4 M NH4Cl must be added to 250 mL of 0.23 M NH3 to obtain a buffer solution having pH=9.40
Perform a financial analysis for a project. Assume the projected costs and benefits for the project are spread over five years as follows: Estimated costs are $300,000 in year 1 and $50,000 in years 2-5.
A gaseous fuel mixture stored at 751mmHg and 298K contains only methane (CH4) and propane (C3H8) . When 12.3L of this fuel mixture is burned, it produces 772kJ of heat. What is the mole fraction of methane in the mixture
For exemple, the internuclear distance in NaCl(g) is 2.3606 angstrom, whereas in NaCl(s) the shortest Na-Cl distance is 2.814 angstrom
Some watch dials are coated with a phosphor, like ZnS , and a polymer in which some of the first H atoms have been replaced by third H atoms, tritium.
When 1.555g of this compound (molar mass=130.13g/mol) was burned in a bomb calorimeter, the temperature of the calorimeter (including its contents) rose by 7.429 degrees celsius. What is the heat capacity (calorimeter constant) of the calorimeter
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