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Chalcopyrite, the principle ore of copper, contains 34.63 percent copper by mass. How many grams of copper can be obtained from 5.11 x 103 kg of the core?
Aminotransferases are enzymes that catalyze the interconversion of amino acids and ?-keto acids. In this way, they can provide the carbon needed for gluconeogenesis from amino acids supplied by dietary protein
a 250ml solution of NaOH has 20g of solute. what is the concentration in moles per litre? what is the concentration of each ion?
A compound that is 43.64% P and 56.36% O by weight has a molecular weight of 283.88 g/mol. What is the molecular formula of this compound
Problem- The following reaction was performed in a sealed vessel at 712 C H_2(g) + I_2(g) (equilibrium symbol) 2 HI(g) Initially, only H_2 and I_2 were present at concentrations of H_2= 3.95 M and I_2= 3.00 M. The equilibrium concentration of I_2 ..
Question- Calculate the theoretical yield for K2NiCa9(NO2)6 from the reaction of 4.3794 g KNO2, 1.2875 g of NiCI2*6H2), and 0.567 g of CaCI2*2H20
silver metal may be precipitated from a solution of silver nitrate by placing a copper strip into the solution. what
If the hydroxyl group has been inverted during the conversion of (1S)-borneol to the product why do we get (1S)-isoborneol in its place of (1R)-isoborneol. Explain how many asymmetric C-atoms are present and which one is 1S
Compare and contrast the number of representative particles and the mass of UF6 with the number of representative particles and mass of CCl3CF3. Explain any differences you observe.
Calculate the amount of heat evolved in the complete oxidation of 8.17g of al at 25 degrees celcius and 1 atm pressure. delta H of f for al2O3 id -1676kj/mol
Explain how the electron configuration of calcium can be determined by changes in I.E. (specifically, the large changes, for example between electron 18 and 19).
Which of the following is the definition of molarity. A. moles of solute/1000 grams of solvent B. moles of solute/liter of solution C. moles of solute/liter of solvent D. moles of solvent/1000 grams of solute
This is the reaction that occurs for a bunsen burner, which is a source of heat for chemical reactions in the laboratory. CH4(g) + 2O(g) CO2(g) + 2H2O (g); for the system at equilibrium, which of the following explains what happens to the equili..
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