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-- 24.3 g of magnesium yield 40.3 g MgO upon combustion with oxygen. How much magnesium needs to be burned to yield 12.1 g MgO?
-- A compound is produced when 6.08 g of nitrogen combine with 13.92 g oxygen. What is this compound?
A vanadium electrode is oxidized electrically. If the mass of the electrode decreases by 114mg during the passage of 650 coulombs, what is the oxidation state of the vanadium product
If a temperature increase from 20.0 to 35.0 triples the rate constant for a reaction, what is the value of the activation barrier for the reaction?
Using the following spectral information, determine the name of unknown organic compound A. For full credit, explain why/how the spectral information led you to your answer.
if i initially have a gas at a pressure of 12 atm a volume of 23 liters and a temperature of 200 k and then i raise the
calculate the pH change that takes place when a 100mL of (a) 0.0500M NaOH and (b) 0.0500M HCl is added to 400mL of a buffer solution prepared by mixing 0.200M NH3
What is the property number order of a carbon with an ethyl, a methyl, an OH and a COOH. Is it clockwise and is it an s or an r. Is the carbon chiral
When two atoms of 2H (deuterium) are fused to form one atom of 4He (helium), the total energy evolved is 3.83 × 10-12 joules. What is the total change in mass
What is the structure for the indole that would be obtained from the phenylhydrazone
Find the standard enthalpy of formation of ethylene, C2H4(g), given the following data: heat of combustion of C2H4(g) = -1411 kJ/mol; ?H°f[CO2(g)] = -393.5 kJ/mol; ?H°f[H2O(l)] = -285.8 kJ/mol.
Calculate the radius of the metal atom. A hypothetical metal has a face-centered cubic unit cell with the edge length of 4.943 Å.
A turbine operates by the impact of a high velocity jet of steam against the turbine blades. The steam leaves the turbine at a lower velovity.
A 99.11 g sample of a highly radioactive element is determined to contain 0.4271 mol of the element. What is the element
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