A1 (Complete this on your Free Response paper) Consider the…
A1 (Complete this on your Free Response paper) Consider the reaction: C2H5OH(l) + 3O2(g) –> 2CO2(g) + 3H2O(l); ∆H = –1.37 x 103 kJ a) What type of reaction is this? b) Is this reaction exothermic or endothermic? Justify your answer. c) How would the ∆H change if 3H2O(g) was produced instead of 3H2O(l)? d) If you react 4.5 g of ethanol, how much heat would be involved? Show your work for full credit.
Read DetailsWhen a hydrogen electron makes a transition from n = 3 to n…
When a hydrogen electron makes a transition from n = 3 to n = 1, which of the following statements is true? I. Energy is emitted. II. Energy is absorbed. III. The electron loses energy. IV. The electron gains energy. V. The electron cannot make this transition.
Read DetailsConsider the following specific heats of metals. Metal Sp…
Consider the following specific heats of metals. Metal Specific Heat Zinc 0.387 J/(g°C) Magnesium 1.02 J/(g°C) Iron 0.450 J/(g°C) Silver 0.237 J/(g°C) Lead 0.127 J/(g°C) If the same amount of heat is added to 25.0 g of each of the metals, which are all at the same initial temperature, which metal will have the highest temperature?
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