What is the enthalpy of water at 80 deg C? How much energy is needed to turn it into saturated vapor steam?
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What is the enthalpy of water at 80 deg C? How much energy is needed to turn it into saturated vapor steam?
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- A gas thermometer registers an absolute pressure of 305 mm of mercury when in contact with water at the triple point. What pressure does it read when in contact with water at the normal boiling point?A pound of body fat stores an amount of chemical energy equivalent to 3,500 Cal. When sleeping, the average adult burns or expends about 0.42 Cal/h for every pound of body weight.How long would the person have to sleep continuously to lose 1 lb of body fat? (Assume the person weighs 150 lb.) Answer in hours.The Specific Heat Capacity of Lithium is 3.56 J / g C. What is this Specific Heat Capacity using calories?
- Solve correctly please. Water is boiled at 1 atm in a 20-cm internal diameter pitted Teflon stainless steel pan on an electric range. If the water drops by 10-cm in 15 minutes, what is the temperature of the inner surface of the pan? (Gpt/ai wrong answer not allowed)The figure below, called a heating curve, represents the temperature of a block of ice as thermal energy is added. (The ice melts into water and then vaporizes into steam.) The thermal energy required to change phase from solid to liquid is calculated using the equation Q = mLf, where Lf is called the (latent) heat of fusion. The thermal energy required to change phase from liquid to gas is calculated using the equation Q = mLv, where Lv is called the (latent) heat of vaporization. cice = 2100 J/kg·K; cwater = 4186 J/kg·K; csteam = 2000 J/kg·K; Lf of water = 3.33 x 105 J/kg; Lv of water = 2.26 x 106 J/kgA snowball made of ice at -11.2 degrees Celsius is thrown at a brick wall. Assuming no energy is lost to the wall or surrounding air, how fast would the snowball have to be thrown in order to completely vaporize upon impact? Include units in your answer. More information. REFER TO THE IMAGE FOR CLEARER DIRECTIONSSuppose we have a piece of a candy bar that has an initial mass of 28g. If we ignite the piece of candy bar (literally burn it), and it increases the temperature of 341.42g of water from 18.11°C to 69.72°C, how many calories per gram of energy did the candy bar provide if the final mass of the marshmallow is 3.92? Note: 1.00 cal = 4.184 J. Give your answer in units of cal/g.