A container made of gold is filled to the brim (and is in thermal equilibrium) with 823 mL of water at 93°C. The temperature of both is then decreased to 23°C. For this temperature, determine the volume of the water and what fraction of the container is empty. (Note: gold is 42 × 10^-6 (°C)^-1, while water is 214 × 10^-6 (°C)^-1.)

50.0 mL of hot water (49.6 oC) is added to 50.0 mL of cold water (24.7 oC).  Upon mixing the water reaches an equilibrium temperature of 36.3 oC.  Calculate the heat absorbed by the calorimeter in units of kJ/oC.  Heat capacity for water is 4.184 J/(g·oC). -0.0267 kJ/oC -0.383 kJ/oC 0.356 kJ/oC -0.449 kJ/oC -0.0307 kJ/oC

A chemical reaction takes place inside a flask submerged in a water bath. The water bath contains  2.70kg  of water at  39.2°C . During the reaction  128.kJ  of heat flows out of the bath and into the flask. Calculate the new temperature of the water bath. You can assume the specific heat capacity of water under these conditions is  4.18·J·g−1K−1 . Be sure your answer has the correct number of significant digits.

When 6.72 grams of potassium chlorate (KCIO3) are dissolved in 120.0 grams of water at 25.0 °C in an insulated container, the temperature of the water decreases to 20.7 °C. Assuming that the specific heat of the solution is 4.184 J/(g °C) and that no heat is gained or lost by the container, what is the AH of solution of KCIO3 in kJ/mol?

A 25.0 g sample of molten iron releases 1230 cal as it cools from 2000 °C to its freezing point, 1535 °C. It then releases an additional 1590 cal as it solidifies.

A quantity of ice at 0 °C was added to 64.3 g of water in a glass at 55 °C. The final temperature of the system was 15 °C. How much ice was added? The melting point of water is 0 °C. The heat of fusion of water is 334 J g–1 . The specific heat of liquid water is 4.184 J g–1 °C

A student mixes 67.0 mL of a 2.01 M sodium hydroxide solution with  22.4 mL  of  6.45 M  hydrochloric acid. The temperature of the mixture rises  17.2 ° C.  The density of the resulting solution is 1.00  g   mL  and has a specific heat capacity of 4.184  J   g  ·   ° C . The heat capacity of the calorimeter is 16.97  J   ° C .  Part 1:   (a) Identify the limiting reagent for the reaction.         Part 2:   (b) Calculate the heat of reaction (in J).    qrxn =      ×  10    JEnter your answer in scientific notation.   Part 3 out of 3   (c) Find the enthalpy of neutralization (in kJ/mol). ΔHneutralization =  ____ kj/mol

A student dissolves 10.2 g of lithium chloride (LİCI)in 250. g of water in a well-insulated open cup. She then observes the temperature of the water rise from 20.0 °C to 27.1 °C over the course of 7.5 minutes. Use this data, and any information you need from the ALEKS Data resource, to answer the questions below about this reaction: LICI(s) Li* (aq) + CI (aq) You can make any reasonable assumptions about the physical properties of the solution. Be sure answers you calculate using measured data are rounded to 2 significant digits. Note for advanced students: it's possible the student did not do the experiment carefully, and the values you calculate may not be the same as the known and published values for this reaction. exothermic Is this reaction exothermic, endothermic, or neither? endothermic neither If you said the reaction was exothermic or endothermic, calculate the amount of heat that was released or absorbed by the reaction in this case. |kJ kJ Calculate the reaction enthalpy…

A chemical reaction takes place inside a flask submerged in a water bath. The water bath contains 9.10 kg of water at 34.3°C. During the reaction 62.1 kJ of heat flows out of the bath and into the flask.Calculate the new temperature of the water bath. You can assume the specific heat capacity of water under these conditions is 4.18·J·g−1K−1. Round your answer to 3 significant digits.

What is the minimum mass of ice at 0°C that must be added to the contents of a can of diet cola(340.mL) to cool the cola from 22.0°C to 0.0°C? Assume that the heat capacity and density of diet cola are the same as for water. The specific heat of water is 4.184 J/g•K. The density of water is 1.00 g/mL and the heat of fusion of water is 333 J/g.