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A very long pipe is capped at one end with a semipermeable membrane. How deep (in meters) must the pipe be immersed into the sea for fresh water to begin passing through the membrane? Assume the seawater to be at 20°C, and treat it as a 0.70 M NaCl solution. The density of seawater is 1.03 g/cm3. The answer to this question is 168 m, however, I do not know how to arrive to this answer. Please provide the steps to arrive to the answer.
C2H5OH (l) + 3O2(g) ---------> 2CO2(g) + 3H2O(l) ?H = - 1.37 x 103 kJ When a 24.8-g sample of ethyl alcohol (molar mass = 46.07 g/mol) is burned, how much energy is released as heat?
Three gases (8.00G of methane CH4, , 18.0G of ethane C2H6, , and an unknown amount of propane, C3H8) were added to the same 10.0-L container. At 23.0 C, the total pressure in the container is 3.90ATM. Calculate the partial pressure of each gas in ..
Which of the following is a neutralization reaction?
a cube made of Platinum has an edge length of 1.60 cm the density of pt is 21.45 g/cm^3 calculate the number of pt atoms in the cube
The polystyrene coffee cup is a very good insulator. However, it still does absorbs a small amount of heat if the system is above room temperature. How does this affect the specific heat of the metal?
2. Which of the following atoms has the highest first ionization energy? (1) Na (2) K (3) Sc (4) Rb 3. In the Hofmann bromamide degradation reaction, the number of moles of NaOH and 2 Br used per mole of amine produced are:
Problem- Part 1) Calculate the change in enthalpy, in kJ, for the combustion of 6.75 moles of C6H14 in oxygen. Report your answer in scientific notation (X.XXEX) with three significant figures. Do not include units in your answer. The enthalpy of ..
Determine how many of the isomers will have a parent name of heptane. (I know the answer is 3, but is there a formula to easily figure it out or how do you go about knowing when you've drawn enough molecules to determine
The formula weight of compound X is 14,200 g/mol How many total mg of X are there in the panda pancreas?
Sodium carbonate (\rm Na_2CO_3) is used to neutralize the sulfuric acid spill. How many kilograms of sodium carbonate must be added to neutralize 3.02×103 kg of sulfuric acid solution
there are many types of covalent bonds with varying polarities and there are also multiple covalent bonds double
If the annual production of acetyl salicylic acid in the U.S.A were converted to 5-grain aspirin tablets, approximately how many tablets would there be for each person? Assume that the population is about 3.0 X 10 ^8. Show Calculation
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