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Calculate the molar mass of a gas that has a density of 143 g/mL at 23 degrees celcius and a pressue of 0.789 atm?
Calculate mass of chromium III hyrodixide, c- Calculate the molar concentration of ions remaining in solution after reaction has taken place (total cocentrations of Cr3+, OH, K, NO3-)
A rigid tank contains 1.50 moles of an ideal gas. Determine the number of moles of gas that nust be withdrawn from the tank to lower the pressure of gas from 25atm to 35 atm.
Draw the chemical structure of a molecule of your design that meets all of the following requirements while also being chemically 'reasonable' ('reasonable' based on a general chemistry, Chem 110/112 knowledge of chemical structure and bonding).
the activation energy for the isomerization of methyl isonitrile is 160 kJ/mol. Calculate the fraction of methyl isonitrile molecules that has an energy of 160.0 kJ or greater at 500 K.
Consider the titration of 82.0 mL of 0.147 M Ba(OH)2 by 0.588 M HCl. Calculate the pH of the resulting solution after the following volumes of HCl have been added.
Calculate the resulting pH if 365 mL of 2.88 M HNO3 is mixed with 335 mL of 1.10 M Ca(OH)2 solution.
One of the emission spectral lines for Be3+ has a wavelength of 253.4 nm for an electronic transmission that begins in the state with n = 5
A gaseous mixture containing 0.150 mol fraction of carbon tetrachloride (CCl4) and 0.850 mol fraction of dry air is initially at 65.0°C and 1121 mmHg
Mass spectroscopy indicates the molar mass to be about 162 g/mol. What is the molecular formula of the unknown compound?
potassiumm chlorate (KClO3) decomposes to form potassium chloride and oxygen gas. if 5.4 moles of potassium chlorate decompose, how many moles of oxygen could be produce.
Water and 8.00 mol/L potassium nitrate solution are mixed to produce 700 mL of a solution with a concentration of 6.00 mol/L. What volumes of water and potassium nitrate solution are used?
For a particle in a one-dimentional box, calculate the probability that the particle will be found in the middle third of the box: L/3 less than or equal to x less than or equal to 2L/3.
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