Which substance in the reaction below is reduced? V205 (s) + 5 Ca→2V0 + 5 Ca0S) a. Ca O b. V205 OCv Od. Cao QUESTION 37 How much heat energy is transferred when 8 moles of CH3OH react? 2 CH3OH) + 302 (g) +4 H20 o + 2CO2 (9) A= -1452.8 kJl mol a. -5811J b. - 363.2J c. 5811J d. 363.2)

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Q: 1. Consider the following reaction, which occurs at standard state: 2C1(g) C12(g) AH° = –243.4 kJ a.…

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A: a) 4 Fe(s) + 3 O2(g) →2 Fe2O3(s)                  ΔHrxn = −1.65 × 103 kJ Mass of Fe= 0.250 kg=250g…

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Q: How many kJ of energy are produced when 5.63 g of bromine gas reacts with excess sodium? 2 Na  +…

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A: Reaction equation :8Al(s) + 3Fe3O4(s) →              4Al2O3(s) + 9Fe(s)∆H°rxn = -3350.0 kJmolMass of…

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Q: Question 8

A: Given, ∆H0 of the reaction = -126kJ. The reaction is

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Q: Question 6

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Q: Question 7

A: The reaction is given as follows:

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Q: How much heat in kJ is liberated at constant pressure if enough calcium carbonate reacts with 84.02…

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Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.