Calculate the heat change
Calculate the heat change at 100C in each of the following problems. Indicate whether heat was absorbed or released.
a. calories to condense 10.0 g of steam b. kilocalories to condense 75g of steam c. kilocalories to vaporize 44 g of water.
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A student was as ked to determine the molecular weight of a weak monoprotic dry acid (HX). She was provided the following laboratory equipment.
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What is the percent by mass of NaHCO3 in a solution containing 30 g of NaHCO3 dissolved in 500 mL of H2O?
What is the boiling point of the solution in which you are going to cook spaghetti if it contains 58.0 g of NaCl dissolved in 1.20 L of water?
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Solid silicon and solid magnesium chloride form when silicon tetrachloride gas reacts with magnesium metal. Write a word equation and an unbalanced formula equation. Include all of the appropriate notations .
A small bubble rises from the botton of a lake, where the temperature and pressure are 4°C and 3.0 atm, to the water's surface, where the temperature is 25°C and pressure is 0.95 atm. Calculate the final volume of the bubble if its initial volume was
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