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Two methods were used to analyze the amount of Au in gold ore. A normal fire assay of 8 samples indicated of 15.6, where s=0.5 oz./ton of ore. The 10 more sample were dissolved in aqua regia and tests using AA spectroscopy. The results were 16.35 where s=0.23 oz./ton.
Select the proper case for comparing data and determine if the 2 methods are statistically equivalent. Use F-test and T-test if necessary.
What volume in mL is needed for the solution of HCl to react with a sample of Al 16.0? 2Al +6HCl => 2Al + 3H2. Calculate the molar concentration of ions in a 0.0200M solution is in Al(NO3)3
When current is allowed to flow, which species is oxidized. What is the value of E0cell
What is the vapor pressure (in torr) above a solution prepared by mixing 47.89 g of water, H2O, with 47.65 g of ethanol, C2H5OH, at 63.50 °C?
Explain solubility rules used to predict precipitation reactions. Predict if precipitation occurs in the mixing reactions of the following aqueous solutions
calculate the mass of oxygen in mg dissolved in a 5.00 l bucket of water exposed to a pressure of 1.13 atm of air.
Given that we start with 0.036M NO(g) and 0.036M O2(g) AND end with 0.014M NO2, what is the equilibrium constant for this reaction and what are the equilibrium concentrations for NO and O2?
What is the balanced equation for the synthesis of Acetylsalic acid (Aspirin) from Methyl salicylate?
what is the relationship between the structure of the fabric molecule and the intensity with which the azo dyes color the fabric?
an airplane is pressurized to 650 mmhg. The partial pressure of oxygen is 137 mmhg. If the partial pressure of oxygen drops below 100.mmhg.
What alkene (including cis and trans isomers) would be produced by the dehydration of the following alcohols. Where possible, predict the relative amounts of each product according to Zaitsev's rule.
The density of pure silver is 10.5g/cm3 at 20 C if 525 g of pure silver pellets is added to a graduated cylinder containing 11.2 ml of water to what volume
The fat, tripalmitin, when hydrolyzed with aqueous NaOH followed by acidification with HCl yields glycerol and palmitic acid.
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