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Size of a hydrogen spherical balloon for lifting a payloadDetermine the size of a spherical balloon filled with hydrogen at 30°C and atmospheric pressure for lifting 400Kg payload. Atmospheric air is at temperature of 27°C and barometer reading is 75 cm of mercury.
How many grams of dry NH4Cl need to be added to 1.60 L of a 0.700 it M solution of ammonia, NH_3, to prepare a buffer solution that has a rm pH of 8.62? K_b for ammonia is 1.8 * 10^{-5}
Determine if the concentration of formaldehyde and methanol as measured in water will convert to its relative organic acids? If there is a measured concentration of formaldehyde and methanol in a 1000L solution of water at temperature = 180 degrees..
Important information about Ethers and Alcohols, Ethers and Alcohols can be isomeric. Write the structures, and give the names for all possible isomers
Consider the solubility information BaSO4 = 3.4 ×10 -4 g 100 g H2O at 20 ?C.Calculate the solubility-product constant Ksp
How many grams of LiCl are needed to make a saturate solution with 300 grams of H2O if the molality of the solution is 19.7.
Predominant Organic Acids Present in Softwoods such as Pine, A wood chemistry course in which we are asked to explain the hierarchy of the organic wood acids present in softwood species like pine or spruce.
An enzyme reduces the activation energy of a reaction at the temperature of 25 degree celsius from 55 kjmol-1 to 15kJ mol-1 by changing the route of the reaction.
How much heat (in kJ) is evolved in converting 1.00mol of steam at 130.0C to ice at -50.0C? The heat capacity of steam is 2.01 and of ice is 2.09 .
Synthesis of Dibenzalacetone from Bezaldehyde and Acetone, Reacting Benzaldehyde with acetone to yield Dibenzalacetone.
One beaker contains 10.0 mL of acetic acid/sodium acetate buffer at maximum buffer capacity (equal concentrations of acetic acid and sodium acetate), and another contains 10.0 mL of pure water.
Suppose you wanted to heat a mug of 250. mL water from room temperature, 25°C, to 100°C to make a cup of tea. How much energy (in joules and in calories) would you need from your microwave.
When making an alcoholic beverage, such as beer and wine, Brix is a measurement used to assess the amount of sugar present in the fermentation matrix or grape juice.
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