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Salinity is a term much used in water conservation and is defined as the total mass in grams of salts dissolved in a 1-kg water sample. you are told to prepare a solution of 75 parts per thousand salinity (75 g of salts per kg of solution) to test the effect on food crops of irrigating farmland with high salinity river water. The solution contains twice as many moles of dissolved NaCl as dissolved mgso4, and three times as many moles of LiCl as NaCl. These are the only solutes. what masses of NaCl, MgSO4, and LiCl are contained in 7500 kg of this solution?
A copper wire (density = 8.96 g/cm3) has a diameter of 0.18 mm. If a sample of this copper wire has a mass of 33 g, how long is the wire?
Given the equation HCl + NaOH--> H2O + Na+ Cl-, how many moles of water are produced in this reaction. Additional info: .500M HCl used, .500 M NaOH used, and delta H^0 is known to be -57.86 kJ/mol water formed
explain the molecular mechanism of how ATP synthase produces ATP
The solution is then allowed to come to equilibrium. Analysis of the equilibrium mixture shows that the concentration of hydroxide ions is 0.000464 M. Calculate the Keq at 25 degrees Celsius for the reaction.
Consider the reaction: Cu^2+(aq) + 4NH3 (aq) -> Cu(NH3)4^2+(aq) Kf=2.1 x 10^13 If Ksp for Cu(OH)2 is 2.2 x 10^-20, what is the value of the equilibrium constant, K, for the reaction below? Cu(NH3)4^2+(aq) + 2OH -> Cu(OH)2(s) + 4NH3(aq)
How many mmols of Tris would you need to prepare 100 mL of a 100 mM Tris solution
as per the ideal gas law a sample 1.075 mol of n2 in a 1.430 l container at temperature of 267.6 kelvin must exert a
Suppose an integral membrane protein diffuses in a cell membrane at a rate of 1.04 square centimeters per 0.09 seconds. Express this rate as an integer with the correct number of significant figures.
What is the work exchanged between the system(gas) and its surroundings. What is the change in internal energy of the gas. What is the change in enthalpy of the gas
ldentify whether or not the reaction would favor the reactants or produ€ts under the specified conditions, and identify whether K gets smaller or bigger
the us consumed 18.8 million barrels mbbl of crude oil per day in 2009. the bp gulf oil spill totaled roughly 200
Calculate the mass in grams of iodine that will react compeltely with 20.4g of aluminum to form aluminum iodide
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