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Which of the following would be expected to be colored?
0.10 M NaC2H3O2 0.10 M Ca(NO3)2 0.10 M C2H5OH 0.10 M CuSO4 0.10 M HC2H3O2
The well-preserved remains of a now extinct woolly mammoth is entombed in the permafrost lands of Siberia. Scientists have conducted carbon dating experiments on plant debris found in the stomachs of this mammoth.
how many grams of carbon are required to react with 1.5x10^25 atoms of hydrogen to form CH4
Find the mass of sodium required to produce 5.68 L ofo hydrogen gas at STP from the reaction described by the following equation: 2Na+2H2O-->2NaOH+H2
Na3PO4+CaCl2 ---> Ca3(PO4)2+NaCl if 0.996 g of Na3PO4 are provided, how many grams of Ca3(PO4)2 should be formed?
Calculate the ratio of HCL molecules in the first excited rotational state to those in the ground state @ 25 C. Assume an equilibrium bond distance of 1.275 angstroms.
You perform column chromatography on a mixture of reaction products which shows two spots on TLC. However, under the column conditions you chose those two compounds do not separate.
When a container is filled with 3.00 mol of H2 , 2.00 mol of O2 , and 1.00 mol of N2 , the pressure in the container is 465 kPa. determine the partial pressure of O2?
A cylindrical glass tube 15.0 cm in liength is filled with ethanol. The mass of ethanol needed to fill the tube is found to be 9.64g.
Calculate the mass (grams) of KHP needed to react with 40. mL of 0.10 M NaOH. B. If 0.7528 g of KHP standard were titrated with NaOH and the endpoint was reached at 36.33 mL
Europium (Europium is a chemical element with the symbol Eu and atomic number 63 )crystallizes in a body-centered cubic lattice compute the unitcell edge length in pm if The density of Eu is 5.26 g/cm3..
The Reaction A->B+C is second order in A. When [A]0=0.100 M, the reaction is 20% complete in 53.7 minutes. calculate the value of the rate constant( in L/min mol)
What mass of sucrose should be combined with 461 g of water to make a solution with an osmotic pressure of 8.85 atm at 310 K? (Assume the density of the solution to be equal to the density of the solvent.)
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