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Problem- An open flask sitting in a lab fridge looks empty, but we know that actually it is filled with a mixture of gases called air. If the flask volume is 3.50 L, and the air is at standard temperature and pressure, how many gaseous molecules does the flask contain?
Please explain above problem in step by step manner so I can easily understand it
Write the equalities and conversion factor to complete the following problems. Use scientific notation and the correct number of significant figures. 6.3 x 10-6 uL=______________L (ten power to the negetive six)
phytane is a naturally occurring alkane produced by the alga spirogyra and is a constituent of petroleum. the iupac
what is the pH of a solution formed by combining 200.0 mL of 0.16 M HCL with 300.0 mL of 0.091 M NaOH at 25 degrees celcius
The rate constant of a reaction at 28°C is 0.064 /s. If the frequency factor is 1.9 1013 /s what is the activation barrier
how many grams of water can be cooled from 45 c to 23 c by the evaporation of 63 of water? the heat of vaporization of
If one slice of chocolate cake contains 35g of carbohydrate, 15g of fat and 5g of protein, calculate the kilocalories that each slice of cake contains.
Calculate the minimum volume of water
The molar solubility of lead sulfide, PbS, is a 0.213 M ammonium sulfide solution is? The Ksp for PbS = 3.2 x 10^-28.
One of those bands consists of radio waves with a wavelength near 20.m . Calculate the frequency of these radio waves. Be sure your answer has the correct number of significant digits.
If the reaction of 25.0 mL of 1.0 M HBr and 35.0 mL of 1.0 M KOH produces 1.45 kJ of heat, what is the change in entalpy of HBr + KOH per mole of water formed
the gas can be treated as a) an ideal gas, b) a real gas. The critical pressure and critical temperature of propane are Pc = 42.5 bar and Tc=370 K, respectively.
An important characteristic in the mechanism of this reaction is the formation of a tetrahedral intermediate which is the result of a. the alcohol attacking the 2-phenylacetic acid with the subsequent loss of a proton.
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