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Problem- A cubic block of phosphorus pentabromide, PBr5, with sides of 3.76cm weights 186.6g. Has a density of what?
The answer is 6.75 but why?
How man grams of hydrogen are in 17.00g of CH3OH, menthol?
The answer is 2.139 but why?
I want to know how this is done please show all steps in detail
Many students find that the absorbance of the DNS reaction with Diet Sprite is lower than the absorbance of water blank. Explain
The decomposition of NOBr is studied manometrically because the number of moles of gas changes; it cannot be studied colorimetrically because both NOBr and Br2 are reddish-brown.
reacting water with magnesium nitride produces ammonia nh3 and magnesium hydroxide. if this process is 70 efficient
An unknown organic compound with formula C5H10O2 contains two chirality centers. The unknown compound gave both a positive Tollen's test and iodoform test. What is the structure of the unknown compound
Calculate the quantity of energy produced per gram of reactant for the fusion of -3 (atomic mass = 3.016049 ) with -1 (atomic mass =1.007825 ) to form -4 (atomic mass = 4.002603
a student titrated three different samples of khp and determined that the sodium hydroxide molarity was 0.1234 m
Nitrogen dioxide reacts with water to form nitric acid as well as nitrogen monoxide according to the equation-3NO2(g)+H2O(l)?2HNO3(l)+NO(g) Presume that 3.9mol NO2 and 1.2mol H2O combine and react completely. Explain which reactant is in excess
Use the molar volume to determine the amount of baking soda required to react with vinegar to yield just enough carbon dioxide to fill a one-quart, self-sealing plastic bag.
A sample of gas with an initial volume of 27.6L at a pressure of 735 mmHg and a temperature of 309 K is compressed to a volume of 15.8 L and warmed to a temperature of 374 K.
Your friend decides to decrease cooking time for spaghetti noodles by adding table salt to 2.0 L water. How much table salt (NaCl) must be added to the water in order to raise the boiling point by 4.0?C? (Kf = 1.86?C/m, Kb = 0.512?C/m)
How much heat will be transferred and how will internal energy of the gas in the cylinder change as it comes to thermal equilibrium with the atmosphere after the process in b? Piston movement is not restricted.
It required 50.00 mL of 0.1565 M KMnO4 to titrate 2.878 g of the solution containing hydrogen peroxide. What was the mass percentage of H2O2 in the solution
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