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Elemental phosphorus burns in oxygen with an intensely hotflame, producing a brilliant light and clouds of the oxide product. These properties of the combustion of phosphorus have led to its being used in bombs and incendiary devices for warfare. P4(s) + 5O2(g) 2P2O5(s)
If 3.37 g of phosphorus is burned,what mass of oxygen does itcombine with?
Given that the sample is a mixture of multiple chemicals and you are NOT given a mixture of KNOWN quantities, what experiement(s) should we do to create our own KNOWN data
Calculate the number of molecules inside the cell, which is 2.2 ?m long and 1.2 ?m in diameter.
into an evacuated 30l vessel is placed 0.1mol of n-butane dissolved in 0.9mol of n-hexane. if the vessel and its
In the reaction of lithium, li with nitrogen n2 three lithium atoms react with on nitrogen atom elements lose one electron, atoms of the other element gain three electrons
Concentration of the five standard solutions for the reaction
if you make a mistake and deliver less than 50.00 ml of hcl to the erlenmeyer flask what effect will this have on the
10.0 grams of sodium bicarbonate reacts with 50.0 mL of 2 M acetic acid, what is the limiting reactant? what reactant is in excess, and by how much? what volumeof carbon dioxide gas would form?
A compound with the molecular formula C13H20 contains 3 rings. This compound is permissible to react with hydrogen over a palladium catalyst. Explain how many molar equivalents of hydrogen will react with this compound. WHY
Which of the following isotopes is more likely to decay via positron emission rather than electron emission.
The resultant AgBr precipitate was removed and 1.0mL of 0.1000 M Fe3+ was added to the filtrate. Then 30.45mL of 0.2505 M KSCN was necessary to titrate the excess Ag+(aq). What is the w/w% bromide in the original unknown sample
The values obtained were 0.207 and 0.900 respectively. Calculate the molar concentrations of the oxidized and reduced forms of the NAD.
Compound A has the molecular formula C14H25Br and was obtained by reaction of sodium acetylide with 1,12-dibromododecane. On treatment of compound A with sodium amide, it was converted to compound B (C14H24).
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