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The solubility of calcium arsenate (Ca3(AsO4)2, molar mass = 398.078 g) in water is measured to be 0.050 g/L. What is Ksp for this salt?
Starting with a 10% solution and making a series of 1:100 dilutions, how many dilutions must you make to prepare 0.1 ppm (part per million) solution. How many ppb's (parts per billion) is this concentration
the value of the strain hardening exponent is 0.3. On the basis of these data what true plastic strain would be expected for a total true plastic stress of 326 MPa
calculate the weight of sodium hypochlorite, NaOCl.
What are the mass and mole fraction of all components in the mixture? What is the average molecular weight of the mixture?
What is the heat of combustion of the glucose expressed in kJ/mol C6H12O6? (1) +2.80x10^3 kJ (2) -2.80x10^3 kJ (3) -15.6 kJ (4) +65.4 kJ (5) -65.4 kJ The correct answer is B, however
The collision (frequency) factor remains the same, by how much an enzyme lower the activation energy of the reaction in order to achive 1 x 10 ^5 fold increase in the reaction rate
For the first order decomposition of acetone at 650 K, the concentration of acetone was 0.350 M after 25.0 min and 0.170 M after 40.0 min.
The enzyme catalase catalyzes the decomposition of hydrogen peroxide. The following data are obtained regarding the rate of reaction as a function of substrate concentration.
If Kp = 1.80 for this reaction, what is the total pressure inside the vessel at equilibrium?
What is the concentration of ammonium ion in a pH 9 solution that forms when concentrated NaOH is added
The vapor pressure of water at 26 degrees C is 25.209 mmHg. How many moles of gas were collected?
A solution is initially 0.050M in acetate, CH3COO- (Kb = 5.6 x 10^-10). 10.0mL of 0.10 M HCl is added. Calculate Ka for the conjugate weak acid of CH3COO-
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