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a) Given that the molar mass of H3PO4 is 97.994 grams, find out the number of grams of H3PO4 needed to prepare 1.20 L of a 0.8 M H3PO4 solution.
b) Explain what volume in liters of a 0.8 M H3PO4 solution can be prepared by diluting 50 ml of a 3.5 M H3PO4 solution?
Ionizable protons are in rapid equilibrium and so you can think of an amino acid having a relative charge between 0 and 1. Plot the relative charge of glutamate as a function of pH
Calculate the potential of a zinc electrode immersed in 0.0100M in Zn(NH3)4 2+ and 0.25M in NH3 B4 for Zn(NH3)4 2+ is 7.76*10^8
Explain what is the pH of 1 liter of a 200mM MES aqueous solution? Require to solve a quadratic equation. Explain how much solid NaOH in grams wants to be added to the MES solution to make a buffer at pH 6.5
Reaction of 2.042g zinc with 2.005g iodine produces 2.510g zinc iodide, leaving 1.518g of unreacted zinc. According to these data, is the law of mass conservation verified within 1% error?
Carbon disulfide and carbon monoxide are produced when carbon is heated iwth sulfur dioxide. 5C9s) + 2SO2(g) --> CS2(l) +4CO9g)
what is the ph at the equivalence point when when 25.0 ml of 0.189moll hn3aq is titrated with 0.123 moll naohaq?assume
What is the half-life of a compound if 60. percent of a given sample of the compound decomposes in 54 min
Give the shape of each molecule in problem and describe whether each molecule is polar or non polar and tell whether each is soluble or insoluble in water
in an experiment a piece of copper is weighed 40.0 g and allowed to react with oxygen. rm 2cus rm o2g to rm 2cuos how
If 28 mL of NaCl reacts completely with 46 mL of 0.44 AgNO3, what is the molarity of the NaCl solution? The reaction is: AgNO3 + NaCl = AgCl + NaNO3
In which solution (acidic, basic, neutral water, or doesn't matter) is copper(II) chloride most soluble
calculate the volume of O2 the bottle could deliver to a climber at an altitude where the temp is -38 C and the atmospheric pressure is 0.40 atm.
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