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A hypothetical element has two stable isotopes one has a mass of 106.9051 amu with an abundance of 48.183% the other isotope has a mass of 108.9048 amu with an abundance of 51.825% what is the average atomic mass of this element?
Can someone please show me the product, and the reaction by-product of the following reaction? Please make sure that the reaction is balanced.
Suppose you were asked to carry out an aldol condensation reaction between benzaldehyde and 5-methylhexanal, modeled after the experiment you performed with benzaldehyde and acetone.
When compared with the boiling points of other compounds of comparable molecular weight, which of the following is true of the boiling points of carboxylic acids
The mysterious peptide X is a nonapeptide that cannot be sequenced by Edman degradation. However, it is susceptible to cleavage by proteases, and the resulting peptide fragments can be sequenced.
What is the percent by mass of NaHCO3 in a solution containing 70 g of NaHCO3 dissolved in 700 mL of H2O?
Calculate the pH at the 6 points of titration (fraction titrated = 0, 0.25, 0.50, 0.75, 1.0, 1.25). Hint: Since these concentrations are not the same, first calculate the volume of NaOH required to reach the equivalent point.
Draw those that have a trisubstituted ring where the methyl groups are oriented in para. Please draw structures
If a solution is made from 100 g of pentane and 100 g of hexane, what will be the mole fraction of pentane in the gas phase over that solution (if only hexane and pentane vapor are present)? Assume no deviation from Raoult's law
Use bond energy values to estimate the reaction enthalpy for the formation of ammonia from nitrogen gas and hydrogen gas. Note that N2 contains a triple bond. You will need structural formula.
The oxidation of nitrogen monoxide gas by molecular oxygen to form nitrogen dioxide gas is reversible and exothermic. Predict the effect of each of the following changes on the position of the equilibrium and a relative change in Kc.
If solar radiation is 1010 , how many photons strike the leaf every second? Assume three significant figures and an average wavelength of 504 for solar radiation.
To find the mass of water use the density of water = 1.0 g/mL. I have looked at multipule different solutions that have already been worked but have not been able to get the correct answer no matter how many different ways i got about getting it.
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