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Pure 2-methylpentane is held in a closed container at 150 degrees F. Both gas and liquid are present. What is the pressure in the container?
In the early days of the periodic table, the 1870s, both silicon and tin were known elements, but germanium was unknown. Using these trends and the densities of silicon and tin that you just obtained, estimate the density of germanium?
A 0.250g sample of citric acid dissolved in 25.0 mL of water requires 37.20 mL of 0.105 M NaOH for complete neutralization. What is the molecular formula of citric acid?
What is ozone and how it works as a protective molecule for our environment? What are the effects of CFCs on the ozone layer.
The crystal structure of lithium sulfide Li2S is pictured here. The edge length of the unit cell is 5.88*10^2pm. What is the density of Li2S in grams per cubic centimeter?
How many moles of Cr(OH)3 will dissolve in 1.00 L of a solution with a pH of 4.85. (Assume the pH does not change as the Cr(OH)3 is placed in the water.) (Ksp for Cr(OH)3 is 6.7 x 10-31)
Assume that patient blood lead levels are 0.600 mg/L that total blood volume is 5.0 L and that 1 mol of succimer binds 1 mol of lead.
The following series of reactions was done on a monosaccharide. Predict the structure of the monosaccharide based on the structure of the product
How do you calculate the rate of change of absorbance per minute over the first 3 minutes to get units, U/ml, total units and percent recovery?
A chemist wants to prepare 0.48 M HCl. Commercial hydrochloric acid is 12.4 M. How many milliliters of the commercial acid does the chemist require to make up 1.48 L of the dilute acid?
Starting with the previous noble gas, write the condensed ground-state electron configuration of an atom of the following elements.
Explain how these products are produced by showing the mecahnism involved. (draw).
A 1-L flask is filled with 1.10g of argon at 25C . A sample of ethane vapor is added to the same flask until the total pressure is 1.25amt .What is the partial pressure of argon, in the flask? What is the partial pressure of ethane in the flask.
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