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Polyethylene is a polymer consisting of only carbon and hydrogen. If 2.300 g of the polymer is burned in oxygen it produces 2.955 g H2O and 7.217 g CO2. What is the empirical formula of polyethylene? Please show step by step how you got this.
The black silver sulfide discoloration of silverware can easily be removed by heating the silver article in a sodium carbonate solution in an aluminum pan.
at a certain temperature an equilibrium mixture in a 10.0 l container was analyzed and found to contain 2.00 moles of
The rate constant for a certain reaction is K = 8.90×10^-3 . If the initial reactant concentration was 0.950 M, what will the concentration be after 14.0 minutes.
Hydrogen bonding between polyamide chains plays an important role in determining the properties of a nylon such as nylon 6,6 (Table 12.2) Draw the structural formulas for two adjacent chains of nylon 6,6 and show where hydrogen-bonding interaction..
what must be happened to the extent of interaction for a much longer hydrocarbon chain like cetane (for example) while Considering that octane molecules are hydrocarbon chains?
Phosphate can buffer in three pH ranges. Provide the chemical formulas of the buffer pairs as well as give the range in which each buffers. Begin with H3PO4/H2PO4-1.
A person ate 0.451 pound of cheese (an energy intake of 3610 kJ). Suppose that none of the energy was stored in his body. What mass (in grams) of water would he need to perspire in order to maintain his original temperature? (It takes 44.0 kJ to v..
consider the composition of dry air in 0 humidity is just about 21 o2 78 n2 and 1 argon by moles. compute the density
what would be the ph of a solution of hypoiodous acid hoi prepared by dissolving 144 grams of the acid in 200 ml of
determine the total volume occupied by a solution made by mixingone liter of alcohol with one liter of water. assume
Calculate the number of moles of carbon dioxide formed if 231 grams of calcium carbonate decomposes. CaCO3(s) ? CaO(s)+CO2(g)
Alexandra (who happens to weigh 130 pounds) has decided to start a training program bicycling for 45 minutes, 3 times/week as well as rock climbing for 1.5 hours every Saturday. How many extra calories will Alexandra burn in 8 weeks of training. W..
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