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A molecular compound that obeys the octet rule in which all atoms have a zero formal charge is a) BaCl2 b) BrF3 c) NCl3 d) XeF4
Calculate the change in internal energy of the system and determine whether the process is endothermic or exothermic: a) a balloon is heated by adding 850J of heat. It expands,
The endpoint of the titration is surpassed. How will this techinque error affect the reported percent avilable chlorine in the bleach sample- too high or too low. Explain.
The head of a strike anywhere match contains tetraphosphorous trisulfide, P4 S3. In an expriment, a student burned this compound in an excess of oxygen and found that it evolved 3677 KJ of hea per mole of P4S3 at a constant pressure of 1 atm.
It takes 46.8 hours for nitrogen-filled balloon to shrink to a quarter of its original volume by effusion though a very small hole. If the same balloon had been filled with helium,
What is the minimum potential (V) required to produce both the oxidation and reduction products written above?
Silver chloride, often used in silver plating, contains 75.27% Ag by mass. Calculate the mass of silver chloride required to plate 155 mg of pure silver.
Vanadium(III) can reduce nitrate ion (NO3-) to nitrite ion (NO2-), producing VOCl3 also Write the BALANCED chemical equation for this reaction.
The rate constant for a certain reaction is = 5.70×10-3 s^-1. If the initial reactant concentration was 0.650 M, what will the concentration be after 14.0 minutes.
Estimate the enthalpy change for the reaction between 1 mol c2h5oh as liquid ethanol, a fuel made by fermenting corn
What volume of water should be added to 600 mL of ethanol in order to have a solution that boils at 95 degrees Celsius? (For ethanol, Tb=78.4 degrees Celsius, Kb=1.22 degrees Celsius and d= 0.789 g/ml. For water d= 1.00 g/m
how many grams of iron (2) chloride would you need in order to make 2.0 L of a .050 M iron (2) Chloride solution?
What is the total mass of bovine serum albumin (BSA) in 50 ml of BSA at 4% (wt./vol), given in milligrams? What is the answer in micrograms?
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