Expressing amounts of energy in different energy units is necessary to solve many chemistry problems. For practice, complete the following table. The Joule (J) is the SI unit of energy. 1 calorie (cal) = 4.184 J J cal kJ 549       197       0.806

A chemist carefully measures the amount of heat needed to raise the temperature of a 1.85 kg sample of C,H,,S from -0.2 °C to 10.8 °C. The experiment shows that 4.04 × 10" J of heat are needed. What can the chemist report for the molar heat capacity of C,H,S? Round your answer to 3 12 significant digits. |J•mol 1 ·K x10 ?

A chemical reaction takes place inside a flask submerged in a water bath. The water bath contains 3.50 kg of water at 38.6 °C. During the reaction 131. kJ of heat flows out of the flask and into the bath.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.

Consider these reactions, where M represents a generic metal. 1. 2 M(s) + 6 HCI(aq) 2 MCI, (аq) + 3 Н, (2) AH1 = -556.0 kJ 2. HCl(g) HCl(aq) AĦ2 = -74.8 kJ 3. H, (g) + Cl, (g) → 2 HCI(g) ΔΗ = -1845.0 kJ 4. MCI, (s) – MCI, (aq) AĦ4 = -493.0 kJ Use the given information to determine the enthalpy of the reaction 2 M(s) + 3 Cl, (g) – - 2 MCl, (s) -556.0 ΔΗ- Incorrect

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.

How much heat is required to raise the temperature of 1.5 x 103 g of water from 45F to 130.F? The specific heat of water is 4.184 J/g·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 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.

22.9 mL of an unknown acid was neutralized by mixing it with 50.3 mL of NaOH in an aqueous solution. The final temperature of the solution was 35.2 °C. The initial temperature of the acid and base was 22.0 °C.  Assuming that the density of the solution is 1.00 g/mL and the specific heat is 4.184 J/g°C, what is the heat of neutralization reaction?

Consider these reactions, where M represents a generic metal. 1. 2 M(s) + 6 HCI(aq) → 2 MCl, (aq) + 3 H, (g) AH1 = -698.0 kJ HCl(g) → HCI(aq) AH = -74.8 kJ H, (g) + Cl, (g) → 2 HCl(g) AH3 = -1845.0 kJ MCI, (s) → MCI, (aq) AH = -292.0 kJ Use the given information to determine the enthalpy of the reaction 2 M(s) + 3 Cl, (g) → 2 MCI, (s) 2. 3. 4.