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Problem- What is the density of glass in g/cm3 if a sample weighing 27.78g has a volume of 11.36cm3? Express answer using significant figures.
Can someone assist me step by step how to work this problem please
Compute the structural analysis of the Protein and What order will the following proteins elute from a caution exchange column loaded at pH 6?
The uncertainty (standard deviation) in a single buret reading for a 50 ml buret is about +/- 0.02 ml. Two readings (initial volume and final volume) are required to deliver a specified volume or titrant.
In a 0.10 M solution of a weak diprotic acid H2A the species present in highest concentration (besides water) would be
I am actually encompassing problems in understanding stoichiometry. I 'm a bit baffled on how to solve problems such as, finding the number of moles as well as other related problems. Explain what I really need is a guide/keys or even sample probl..
What is the vapor pressure of a solution consisting of 4 moles of benzene and 5 moles of toluene. What is the mole fraction of benzen in the vapor above the solution from the mixture
Show how you would synthesize di-tert-butyl ether from any starting material you would like that contains four or fewer carbons
what is the hydronium-ion concentration of a buffer solution that is .25 m na2hpo4 and .40 m nah2po4? for h3po4
from the plots of the boiling point versus the volume of distillate in either of the fractional distillations of the ethanol-water mixture,what conclusion can you draw about the homogeneity of the distillate?
How much heat (in kJ) is required to warm 13.0 g of ice, initially at -110.0?C? The heat capacity of ice is 2.09 J/g??C and that of steam is 2.01 J/gC
Liquid butane, C4H10, is stored in cylinders to be used as a fuel. Suppose 31.2 g of butane gas is removed from a cylinder. How much heat must be provided to vaporize this much gas. The heat of vaporization of butane is 21.3 kJ/mol.
Could you please tell me between water and alcohol, which one is more polar. and why. (please, as detailed as possible). What factors need to be considered to compare the polarity of 2 molecules.
The concentration of glucose inside a cell is 0.14mM. outside the cell the concentration of glucose is 12.8 mM. Calculate the change in Gibbs free energy for the transport of 5.00 moles of glucose
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