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What is entropy (no measure of disorder, please)? How was it introduced in science? What is its significance in chemistry? Calculate the change of entropy when the volume of 1 g of Helium is doubled, assuming that helium is an ideal gas.
However, a water transporter was discovered in 1992 and it was named aquaporin. Aquaporin is a single subunit protein that is barrel-shaped and open to both sides of the membrane
The stopcock between A and B is opened. The pressure in A and B is now 219mmHg. How many moles of H20 are in the system?
The Dumas method for determining molar masses was used to obtain an approximate molar mass, and this value was used to identify the alcohol. The gaseous alcohol at 98oC and 740Torr has a mass of 0.276g in a Dumas bulb of volume equal to 270mL. Whi..
Question- What are some of the possible uses of paper chromatography and other similar types of chromatography such as thin layer chromatography. Select all that apply.
A 5 once cup of yogurt contains 6.0 g of protein, 2.0 g of fat, 26.9 g of carbohydrate. the fuel values for protein, fat and car. are 17.38 and 17 KJ/g respectively. The fuel values of this cup is how many KJ
how many milliliters of 0.100 m naohaq would be needed to completely neutralizenbsp 50.0 milliliters of 0.300 m
If the electron affinity for an element is a negative number, does it mean that the anion of the element is more stable than the neutral atom. explain
If 6.73 g of Na2CO3 is dissolved in enough water to make 250.0 mL of solution, what is the molar concentration of the sodium carbonate. What are the molar concentrations of the Na+ and CO32- ions
You are given solutions of HCl and NaOH and must determine their concentrations. You use 30.6 mL of NaOH to titrate 100. mL of HCl and 18.0 mL of NaOH to titrate 50.0 mL of 0.0796 M H2SO4. Find the unknown concentrations.
Liquid HCN is unstable with respect to trimer formation. What would be the structure of this trimer
Consider a molecule with spacing between two energy levels of 0.250 kJ mol-1. Calculate the wavelength and wavenumber of the photon that would be needed to lead to an excitation between these two levels.
Problem- If the density of ocean water at a depth of 10,000 m is 1.071 g/mL and if 21 g of water at that depth contains 191 mg of potassium chloride, what is the molarity of potassium chloride in the sample
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