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Question: A series of full-period consecutive dust samples are collected during an 8-hour work shift. Samples were collected on filters and weighed gravimetrically, with results as follow:
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XeF6+3H2O-->___+6HF What is the missing gas oxide? I tired to input XeO3 but that was incorrect.
What is the PH of the buffer that results when 12.0 g of NaH2PO4 and 8.00 g of Na2HPO4 are diluted with water to a volume of .50 L? (Ka of H2PO4=6.2*10^-8, the molar masses are 120.0 g/mol and 142. mol respectively.
a sample of gas occupies 721 ml at 1.00 atm. the pressure is increased to 1.1 atm the temperature stays the same. what
If 16.76 mL of an aqueous solution of NaOH reacts with 0.5683 g of KHC8H4O4, how many moles of NaOH reacted. What is the concentration of the NaOH solution
Write the chemical equation for all the reactions both SN1 and SN2 involving primary and secondary substrates
Imagine repeating the experiment utilizing two 50mL portions of ether. How much of the 250 mg of phenacetin could be extracted. Remember that the 1st extraction removes a portion of the sample thus the calculations will change a little.
The concentration of carbonate ion (CO32-) is 1.2 x 10-7 M. The precipitation of CaCO3 is favored under conditions in the ocean. If all of the CaCO3 precipitated what would be the concentration of the excess reactant
Question- For questions such as whether if something is soluble in water, base or acid, what is the most convienient way to approach this with mostly inspection. Example - is lead carbonate soluble in water, base or acid.
Zinc metal can be obtained from zinc oxide (ZnO) by reacting the oxide with the element carbon. The products of the reaction are Zn and CO2. What mass of zinc oxide is needed to react completely with 2.22 mol of carbon? Answer in units of g
A Chemistry experiment requires 25.2g of silver nitrate, how many grams of a 15.5% by mass solution of silver nitrate should be used
1.Determine the molar mass of a gas, if 3.94g of the gas occupied a volume of 3.52L at STP.
What is the boiling point of a solution produced by adding 510g of cane sugar (molar mass 342.3g/mol ) to 2.1kg of water. For each mole of nonvolatile solute, the boiling point of 1kg of water is raised 0.51 degrees celsius.
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