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A solid cylinder of plastic has a density of 1.6 g/cm^3. If is then cut exactly in half. What is the density of each of the pieces now and explain the reason for your answer?Would the density of each piece be .8? If so how would you explain? If its not then I'm over thinking this question.
the resulting solution exerts an osmotic pressure of 829 torr. what is the molar concentration of the solution? how many moles of solute are in the solution? what is the molar mass of the solute?
10-At 900K the following reaction has Kp = 0.345. In an equilibrium mixture the partial pressures of SO2 and O2 are 0.210 atm and 0.770 atm, respectively. What is the equilibrium partial pressure of SO3 in the mixture
Calculate the pH of the buffer prepared by mixing 35.0mL of 0.15M HC2H3O2 with a 25.0mL of 0.10M NaC2H3O2. K(a) for HC2H3O2 = 1.8 x 10^-5
A 0.75-L bottle is cleaned, dried, and closed in a room where the air is 22 degrees C and 44% relative humidity (that is, the water vapor in the air is 0.44 of the equilibrium vapor pressure at 22 degrees C). The bottle is brought outside and stor..
How many grams of formic acid, HCOOH, must be added to 0.240 L of 0.110 M sodium formate, HCOONa, to yield a buffer solution with a pH of 3.50. Assume no volume change. Ka of HCOOH = 5.0 10-4
cortisol m 362.47 gmol one of the major steroid hormones is a key factor in the synthesis of protein. its profound
What is the composition in mole fractions of the gas mixture that is expelled? The solubilities of CH4 and C2H6 at 20 degrees celcius and 1 atm are .0175 g/L H20 and .059g/L H2O, respectively.
you have a 550 ml tank of gas with a pressure of 1.56 atm at 24.0degc. you thought the gas was pure carbon monoxide but
What is the pressure of a mixture of helium, nitrogen and oxygen if their partial pressures are 600 mmHg, 150mmHg and 102mmHg
Unit cell problem of copper (Cu) is a face-centered cube that has an edge lenth of 3.62 A (note: 1A=1*10^-10 m). Determine the volume occupied by one mole of copper atoms, , in terms of mL/mol.
What impurity is most likely to be presented in the sample of aspirin you prepared? Wjat effect would this impuruty have if the product were intended forhuman consumption
You may want to write out the reaction)When ethane (C2H6) reacts with chlorine (Cl2) the product is C2H5Cl and HCl. In a certain experiment 165 g of C2H6 reacts with 255 g of Cl2.
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