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Problem: Suppose it took 11.5 mL of 0.112 M NaOH solution to neutralize the acid solution and that you used 0.592 g of green crystals to prepare the original 50.0 mL solution (of which only 10.00 mL is analyzed for Co content at a time).
Calculate the mass of cobalt in the sample, the percent cobalt and the percent error.
dr. browns new house will need to use propane c3h8 gas to fuel the range because natural gas service is not available
Problem- How to prepare 100mL of extraction buffer using [ 10mM Tris-HCl, 1mM EDTA, 1mM phenylmethylsulfonyl fluoride (PMSF), and 1mM 2-mercaptoethanol.
a first order reactionhas a rate constant 0.00510.if we begin with 0.10 m concentration of the reactant how much of
Fortunately, you can narrow the search because the PVC piping comes from unique vendors each with their unique degrees of polymerization. By detailed measurement, you determine that the PVC molecular non-extended (i.e., coiled) length is 7 nm. Wha..
The refining of aluminium from bauxite ore proceeds by the overall reaction: 2Al2O3 + 3C --> 4Al + 3CO2.
Ethylene glycol is used as automobile antifreeze. 6.38g og this compound contains 2.47g of carbon and 0.620g of hydrogen. The rest is oxygen. The molar mass is 62.0g/mole.
Using the table of reductions values explain why silver ion is the reactant and why silver metal is a sacrificial anode that protects mercury from oxidizing into mercury(I) or mercury(II) ion.
Sleeping pills often contain barbital, which is weakly acidic (pKa = 8.00). For analysis of the barbital content of a sleeping pill, a titration is carried out with strong base. It takes 12.00 mL of 0.200 M base to reach the stoichiometric point.
what mass of this substance must evaporate in order to freeze 119 of water initially at 24? the heat of fusion of water
An unknown gas is found to effuse at a rate that is 1.864 times faster than Br2 at the same temperature. What is the identity of the gas.
the permangenate ion and determine the standard reduction potential for the reaction.
what is the percent yield of a reaction in which 262 g phosphorus trichloride reacts with excess water to form 102 g
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