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magnesium hydroxide is 54.87% oxygen by mass. How many grams of oxygen are in 175g of the compound ?
A proton in a linear accelerator has a de Broglie wavelength of 144 pm. what is the speed of the proton?
If the reaction 2H2S(g) 2H2(g) + S2(g) is carried out at 1065C, Kp = 0.0120. What is the value of Kc for the reaction H2(g)+1/2S2(g) H2S(g) at 1065C ?
Gaseous HBr has an absorption band centered at about 2645 cm-1 consisting of a series of lines approximately equally spaced with an interval of 16.9cm-1.
determine the final volume of the gas If the gas ocupied 68mL, initally and determine the molarity of the solution
Our quality control department is being moved to a different location and will not be able to handle any projects for a few weeks.
The half-life of radon-222 is 3.8 days. How much of a 100 g sample is left after 15.2 days?
The Ksp for PbSO4 = 2.53 X 10-8. What is the molar solubility of PbSO4 in a 4.20M solution of gallium sulfate?
Identify the most stable arrangement of the regions of high electron density. Diagram and name the type of structure that the molecules has based on positions of the atoms.
Using the information below, calculate the mass of benzene in each phase and find the total mass of benzene at the site.
How many atomsof carbon are present in 34.5 grams of caffeine?
Iincreasing the total pressure on the system by decreasing its volume, (c) adding gaseous I2 to the reaction mixture?
A reaction vessel contains these compounds at equilibrium. What will happen if the volume of the container is reduced by 50% at constant temperature.
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