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When strongly heated, boric acid, B(OH)3, breaks down to boric oxide and water. What mass of boric. When strongly heated, boric acid, B(OH)3, breaks down to boric oxide and water. What mass of boric is formed from the decomposition of 10.0g b(OH)3 2B(OH)3(s) ---> B2O3(s) + 3H2O(g)

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Sixta Kovacek
Sixta KovacekLv2
13 Dec 2019

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Related questions

1. When 2.750 g of the oxide of lead Pb3O4 is strongly heated, it decomposes and produces 0.0640 g of oxygen gas and 2.686 g of a second oxide of lead. What is the empirical formula of this second oxide? 2. A 0.9157-g mixture of CaBr2 and NaBr is dissolved in water, and AgNO3 is added to the solution to form AgBr precipitate. If the mass of the precipitate is 1.6930 g, what is the percent by mass of NaBr in the original mixture? Answer: %NaBr = 56.2%Please show steps!!!

Answer is B just need the work

a). Write and balance the chemical equation for the enthalpy of formation of iron (lll) oxide (FeO3).

b).Use the following thermochemical equations to determine the enthalpy of formation of iron (lll) oxide.

2 Fe (s) + 6H2O (l) ---2 Fe(OH)3 (s) + 3H2(g) dHrnx= +322kJ

FeO3 (s) + 3H2O (l)----2 Fe(OH)3 (s) dHrnx = +289kJ

2 H2 (g) + O2 (g)--- 2 H2O (l0 dHrxn = -572 kJ

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