Reference no: EM13186765
1. Supposed you have a beaker of water that is being heated on a hot plate. If you are studying the amount of heat that is requred to change the water temperature by a certin amount. What is a reasonable choice for the system and surroundings?
2. For the enthalpy change to be the same as the heat at constant pressure, ?H=q p pressure must be constant (as indicated by the subscropt "p". How will you keep the pressure constant in this laboratory experiment?
3. The specific heat of aluminum (as used in a soda can) is C(al)= 0.900 J g^(-1) K^(-1). The specific heat of water is C(water) = 4.184 J g^(-1) K^(-1).
a.If samples of water and aluminum of equal mass are heated from 25 C to 75 C, which sample absorbs more heat? Briefly explain your answer using reasoning and not calculations.
b. If the same amount of energy is added to each sample, which feels hotter to the touch? Briefly explain your answer using reasoning and not calculations.
c.If a water sample weights 200.g, calculate the energy required to raise the temperatre from 25 C to 75 C
4.Write out a balanced chemical equation(including states) for the combustion of methanol.
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Explain aqueous hydrochloric acid to form a water-soluble
: How much A would have been extracted into ether if the orginal aqueous solution had been extracted once with a 500-mL portion of ether? What percentage of A would have been extracted by the ether?
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State structural formula of the lewis-acid base complex
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How country a with comparative advantage in boot making
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State pentaerythritol with hexamethylene di-isocyanate
: ethylene oxide polyol that has been generated from pentaerythritol with hexamethylene di-isocyanate, where the ratio of hydroxyl groups to isocyanate groups
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What is a reasonable choice for the system and surroundings
: Supposed you have a beaker of water that is being heated on a hot plate. If you are studying the amount of heat that is requred to change the water temperature by a certin amount. What is a reasonable choice for the system and surroundings?
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What is the value of the marginal product of labor
: The market price of the product is $10 per unit and the market wage rate is $8. Labor employed 4, total product 17 labor employed 5, total product 20 labor employed 6, total product 25 labor employed 7, total product 28 labor employed 8, total produc..
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Examining crime scenes for the presence of washed-away blood
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