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How many different tripeptides can be made from two molecules of glycine and one molecule of histidine?
if 2000 l of hard water contains 0.022 m ca2+ and 0.0070 m mg2+, how many moles of na+ are needed to replace these ions?
Consider a binary liquid mixture A and B, where A is volatile and B is nonvolatile. The composition of the solution in terms of mole fraction is xA = 0.045 and xB = 0.955
Draw the structures of the bases in DNA and indicate the H bonding interactions between the base pairs.
Calculate the free energy change for the following reaction and predict whether the reaction occurs spontaneously at 25 degrees celcius. H2(g)+CO2(g)-->H20(g)+CO(g); ?H=41.8 kJ, ?S=42.1 J/K
An evaluation of R was performed, following the procedure described in this module. The barometric pressure was 736 torr, the temperature was 295 K, and the volume of hydrogen gas collected was 35.6 mL. The calculated value of R was 82.1mL atm K-1..
A large flask with a volume of 936mL is evacuated and found to have a mass of 134.66 g. it is then filled to a pressure of 0.967atm at 31 C with a gas of unknown molar mass and then reweighed to give a new mass of 135.91 g. what is the molar mass ..
a sample of gas occupoes 17ml at -112 degrees C. what volume does the sample occupy at 70 degrees C.
How are fatty acids transported into the mitochondria for breakdown? Which precursor for fatty acid synthesis blocks this transport pathway, and how is that important for the regulation of fatty acid metabolism?
How many moles of iron atoms are in 2.28 mol of Fe2O3?
Titration of a .7439g sample of impure Na2B4O7 required 31.64mL of .1081M HCl. Express the results of this analysis in terms in percent
petit discovered the empirical rule that the specific heat times the atomic weight of many solid elements is a constant: Using this rule, calculate the specific heat of copper and platinum.
Construct the lewis structure model for the ionic compound potassium chloride using the following steps.
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