For the following reaction, what is the energy released, in GJ/mol? (1 GJ = 1E9 J) Use 2.998E8 m/s as the speed of light 1 a m u has a mass of 1.6605E-27 kg A + B → C + D      A          B          C          D        mass (amu) 3.1885         6.3548           4.1791         5.1353         Express your answer as a positive value

A chemist measures the energy change AH during the following reaction: 2 Fe,O3(s) → 4 FeO(s)+O,(g) AH=560. kJ Use the information to answer the following questions. endothermic. This reaction is... х10 exothermic. Suppose 17.3 g of Fe,O, react. Yes, absorbed. Yes, released. Will any heat be released or absorbed? No. If you said heat will be released or absorbed in the second part of this question, calculate how much heat will be released or absorbed. kJ Round your answer to 3 significant digits.

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How much energy is released when 1.00 Mg of sulfur trioxide is produced by the following reactont 2 50, (g)+Os le) 2 So, (g) AH=-192.8 k

According to the following thermochemical equation, what mass of HF (in g) must react in order to produce 487. kJ of energy? Enter your answer as an integer. SiO,(s) +4 HF(g- SIFale) + 2H,O1) AH--184 k/mol Type your answer. Next Previous

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Question 25 of 27 The combustion of hydrogen-oxygen mixtures is used to produce very high temperatures (ca. 2500 °C) needed for certain types of welding operations. Consider the reaction to be H2(g) + ½O2(g) - H20(g) AH° = -241.8 kJ/mol What is the quantity of heat evolved, in kilojoules, when a 180 g mixture containing equal parts of H, and O, by mass is burned?

A chemist measures the enthalpy change AH during the following reaction: Sg(s) + 24 F,(g)→8 SF(g) AH=-9672. kJ Use this information to complete the table below. Round each of your answers to the nearest kJ/mol. reaction ΔΗ 10 SSF, (3) → S, (3) + 24F, (z) S,6) + 6F, (g) 2SF, (3) 4 4 SF, (e) -- S,(1) + 4F, (3)

When two atoms of 2H are fused to form one atom of 4He, the total energy is 3.83x10-12 J. What is the total change in mass (in amu) for this reaction? Express your answer to 4 decimals, and include the unit with your answer.

(a) What is the theoretical yield of ammonia (in grams) if 16.55 grams of nitrogen gas and 10.15 grams of hydrogen gas are allowed to react? (b)Based on your theoretical yield, what is the percent yield of ammonia if only 8.33 grams of ammonia are produced? (c)How much heat energy (in kJ) will be absorbed or released if 8.33 grams of ammonia are produced? State whether the energy will be absorbed or released.