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What is the theoretical yield in grams of CuS for the following reaction given that you start with 15.5 g of Na2S and 12.1 g CuSO4?Reaction: Na2S + CuSO4 ? Na2SO4 + CuS
What is the pH of a solution made by dissolving 46g of acetic acid in enough water to make 700 ml of solution
Pure solid NaH2PO4 is dissolved in distilled water, making 100.0ml of solution. 10 ml of this solution is diluted to 100.00 ml to prepare the orignal phosphare standard solution
What minimum pressure must be supplied to a reverse osmosis water purification system in order to overcome the osmotic pressure in water that is 1.24 M in total dissolved ions at 16 C?
How many grams of hydrobromic acid (HBr) must be dissolved in 720 ml of water to make a solution with a pH = 6.2?
How many grams of formic acid, HCOOH, must be added to 0.160 L of 0.150 M sodium formate, HCOONa, to yield a buffer solution with a pH of 4.30? Assume no volume change. Ka of HCOOH = 5.0 10-4.
Which of the following molecules have dipole moments? For the molecules that are polar, indicate the polarity of each bond and the direction of the net dipole moment of the molecule.
Explain Threshold / NOEL Levels of Chemical Toxins, What is the maximum average daily consumption(g) of such fish that would keep exposure level below the ADI or RfD for the compound?
Calculate the mass of H2O produced when 12.0 g of glucose is combusted in a container of oxygen with a volume of 1.3 L at a pressure of 2.2 atm and a temperature of 205 °C.
How many grams of oxygen are required to completely burn 5.90g of C3H8 in the following unbalanced
Calculate the change of volume of the cube at a depth of 1.000 km (disregarding the effects of temperature). Take the mean density of sea water as 1.03 g/cm3
A sample of neon has a volume of 610 mL when it is at a pressure of 867 mmHg. What will be the volume when the pressure is increased to 1760 mmHg
Write an equation that represents the reaction of 2% aqueous KMnO4 solution with 3-hexene, CH3-CH2-CH=CH-CH2-CH3
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