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An experiment requires 42.0 of ethylene glycol, a liquid whose density is 1.114 . Rather than weigh the sample on a balance, a chemist chooses to dispense the liquid using a graduated cylinder. What volume of the liquid should he use?
To find the volume of a flask, it is first evacuated so it contains no gas. Next, 2.2 g CO2 is introduced into the flask. On warming to 33 °C, the gas exerts a pressure of 760.0 mm Hg. What is the volume of the flask in milliliters
A 4.78-g sample of aluminum completely reacts with oxygen to form 6.67 g of aluminum oxide. Calculate the mass percent composition of aluminum in aluminum oxide
An aqueous solution of glycerol C3H8O3 is 48% glycerol by mass. Calculate the molality of the glycerol solution
In the qualitative cation analysis procedure, Bi3+ is detected by the appearance of a white precipitate of bismuthyl hydroxide, BiOOH(s): BiOOH(s) --->
Using the inverse square law of radiation, what Geiger counter reading would you get for a radioactive material when you are 3 feet from the source
use a solid line to represent the correct calibration line and a dotted line for the line with the systematic error.) Also discuss the advantages and disadvantages of spectral methods of analysis.
Describe the biogeochemical cycles for H2O, C and N and describe how human activities have thrown them out of their natural balance.
What volume of O2 at 684 mmHg and 21 degree celsius is required to synthesize 25.0 mole of NO?
draw the shape of the molecules and give the orbital geometry around the central atom; the molecular geometry; and give the hybridization state
When boron triflouride is added to ammonia gas, does boron triflouride act as a lewis acid or a lewis base?
What does the volume correction constant (b) in the van der Waals equation represent? Why is b for helium small (b = 0.0238 L /?mol) compared to b for decane (C10H22, b = 0.3043).
It has only one active site! Describe how four bases with different geometries can fit into a single active site and how does the enzyme differentiate between the four bases
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