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Chemistry, 21.06.2019 20:30
In which layer of earth do most earthauakes occur a_ inner core b_outer core c_mantle d_crust
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Chemistry, 23.06.2019 06:40
The combustion of methane, ch4, releases 890.4kj/mol. that is, when one mole of methane is burned,890.4 kj are given off to the surroundings. this meansthat the products have 890.4 kj less than the reactants.thus, ah for the reaction = - 890.4 kj. a negative symbolforah indicates an exothermic reaction.ch (g) + 20 (g)> co2 (g) + 2 h0 (1); ah = - 890.4 kga) how much energy is given off when 2.00 mol of ch,are burned? b) how much energy is released when 22.4g of ch. areburned?
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Chemistry, 24.06.2019 03:00
In the industrial "chlor-alkali" process, pure chlorine and sodium hydroxide are produced by electrolyzing brine, essentially an aqueous solution of sodium chloride. suppose a current of is passed through an aqueous solution of for seconds. calculate the mass of pure chlorine produced. be sure your answer has a unit symbol and the correct number of significant digits.
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