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In air and according to Stokes Law, the settling rate of particles is proprotional to the squares of their diameters, if they have the same densities. If emitted particles with a given diameter are found to settle out after 7 days, how long would it take a particle of the same material with 1x the diameter to settle out?
A component of a protein called serine has the following percent composition by mass: 34.95% C, 6.844% H, 46.56% O, and 13.59% N. It also has an approximate molar mass of 100 g/mol.
a mixture of methane and ethane is stored in a container at 294 mmHg. The gases are burned in air to form co2 and h2o. if the pressure of co2 is 357 mmhg measured at the same temperature and volume as the original mixture, calculate the mole fract..
benzylamine was titrated with 0.050 0 M HCl. Calculate the pH at the following volumes of added acid: Va = 0, 12.0, 30.0, 0.5 Ve, Ve, and 35.0 mL.
The oxidation half and the reduction half of a voltaic cell are made of the same electrodes and the same electrolyte. The concentration of electrolyte is different in each compartment.
If I burn 0.315 moles of hexane (C6H14) in a bomb calorimeter containing 5.65 liters of water, what's the molar heat of combustion of hexane is the water temperature rises 55.4 ºC? The heat capacity of water is 4.184 J/g ºC .
Consider the following reaction: CO(g)+H2O(g)in equilibrium with CO2(g)+H2
Calculate the change in temperature for 1.30 g of CaCl2 dissolved in 25.0mL of H2O. Assume that the calorimeter absorbs no heat. (ie C cal=0)
supposed 175 mmol of NH3 and 131 mmol of O2 are added to an empty flask how mych NH3 will be in the flask at equilibrium.
Assuming an ideal solution, what is the molecular mass of the compound?
What is the difference between a hypothesis and a theory? a hypothesis is a proposal that has been tested extensively, whereas a theory is an initialy stated proposal a hypothesis is a conclusion made after a theory was tested words hypothesis
A body consists of a right circular cone whose base is 12 in. and whose altitude is 16 in. A hole 8 in. in diameter and 4 in. deep has been drilled from the base. The axis of the hole coincides with the axis of the cone. Locate the centroid of the..
write a balanced chemical equation for the reaction that occures in the experiment (B) Give the net ionic equation for this reaction
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