Chemistry, 29.07.2019 02:30 blueval3tine
for the chemical reaction h2 + co2 → h2o + co, the energy contained in the reactants is 394 kj, and the energy contained in the products is 352 kj, assuming 1 mol of each substance is present. which of the following statements is true? a. 42 kj is released, and the reaction is exothermic. b. 42 kj is absorbed, and the reaction is exothermic. c. 42 kj is absorbed, and the reaction is endothermic. d. 42 kj is released, and the reaction is endothermic
Answers: 1
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What happens when an atom of sulfur combines with two atoms of chlorine to produce sci2? a. each chlorine atom shares a pair of electrons with the sulfur atom. b. an electron is transferred from each chlorine atom to the sulfur atom. c. an electron is transferred from the sulfur atom to each chlorine atom. d. each chlorine atom shares all its valence electrons with the sulfur atom.
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What is the approximate mass of 25 cm3 of silver, if the density is 10.5 g/cm3? a. 0.42 g b. 2.4 g c. 42 g d. 260 g
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for the chemical reaction h2 + co2 → h2o + co, the energy contained in the reactants is 394 kj, and...
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