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A sample of an unknown metal has a mass of 35.4 and a volume of 3.11 . Whats the DensitY?
A piece of metal with a mass of 169 g is placed in a 50 mL graduated cylinder. The water level rises from 20. mL to 38 mL. What is the density of the metal?
What is the molarity of a sulfuric acid solution if 40.2 mL of this solution is required to titrate 6.50 grams of sodium hydrogen carbonate?
What chemical tests might be used to ditinguish between pentanal and 2-pentanone; between benzyl alcohol and diphenylmethanol?
To make a 325 mL solution of 0.150 M NaCl, how many grams of NaCl need to be weighed out?
At a given temperature, 1.40 atm of H2 and 2.03 atm of I2 are mixed and allowed to come to equilibrium. The equilibrium pressure of HI is found to be 1.305 atm. Calculate Kp for the reaction at this temperature.
A 2.00-g sample of white solid was vaporized in a 345-mL vessel. If the vapor has a pressure of 985 mmHg at 158°C, what is the molecular mass of the solid?
Given the reaction 4Al(s)+302(g)--2Al2O3(S), what is the minimum number of moles of oxygen gas required to produce 1.00 mol of aluminum oxide?
He was befuddled when he isolated a material with a single 1H nmr signal at 1.64 δ and 13C nmr signals at 123 δ and 18.9 δ . Use epwa to show Bonnie what happened.
Aqueous solutions of each of the following salts {sodium acetate, sodium phosphate, sodium formate, and sodium carbonate} have a pH that is > 7. The reason for this is that the anion undergoes a so-called "hydrolysis reaction".
Determine the expression for the rate of reaction with respect to each of the reactants and products
Using A sample having X amount of oxalic acid. If 0.5187 grams of the sample requires 40.20 mL of 0.1000 M Sodium hydroxide to neutralize the oxalic acid completely.
what is the correct electron configuration for Cr (chromium). Chose the proper Lewis dot structure for the compound or poliatomic ion: Sulfur Dioxide (SO2).
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