Lightweight camping stoves typically use a mixture of Cs and C6 hydrocarbons, which is called white gas. Assuming white gas is 100% C5H12 (MW = 72.15 g/mol) with an enthalpy of combustion of –3550 kJ/mol, how many grams of it must be used to heat 1.50 L of water from 20.0°C to 80.0°C? Assume all the energy is used to heat the water. 8.96 g 9.65 g %3D d. 6.99 g 10.73 g а. е. b. с. 7.65 g

When 6.54 grams of Zn is placed in 500.0 mL of 1.00 M CuSO4(aq) in a coffee cup calorimeter, it reacts completely to displace copper. The temperature of the solution rises from 20.0˚C to 30.4˚C. Assume the coffee cup itself gains no heat and that the solution has the same density (1.00 g/mL) and specific heat (4.184 J/g˚C) as pure water. (a) How much heat does the solution gain during this reaction? (in J)

2. Consider the equation for the combustion of acetone (C₁H₂O), the main ingredient in nail polish remover. AHR -1790 kJ CHO (l)+4Oz (g) -> 3 CO, (g)+3H,O (g) If a bottle of nail polish remover contains 255 g of acetone, how much heat is released by its complete combustion?

[11] A 10.00 g sample of a metal alloy was heated to 88.99 °C. It is then quickly dropped into 40.0 g of water in a calorimeter. The water temperature rises from 19.73 °C to 24.23 °C. Calculate the specific heat of the alloy. [Specific Heat of Water = 4.184 J/g °C and Heat Capacity of Calorimeter = 12.6 J/°C]

4. The combustion of toluene (C7H8) has a heat of reaction of -3.91 x 10³ kJ/mol. When 1.55g toluene undergoes combustion in a bomb calorimeter, the temperature rises from 23.12°C to 37.57°C. Find the heat capacity of the bomb calorimeter.

Calculate enthalpy of reaction given reaction enthalpies for proposed steps in a process. K+(g) + Cl-(g) → KCI(s) KCI (LE) = ? Cl2(g) → 2CI(g) Cl-CI (BE) = 243 kJ/mol K(g) → K+(g) + 1e- K (IE) = 419 kJ/mol K(s) → K(g) K (AHsub) = 89.0 kJ/mol Cl(g) + 1e- → CI-(g) CI (EA) = -349 kJ/mol K(s) + 1/2C12(g) > KCI(s) KCI (AH;) = -436.5 kJ/mol

A gaseous fuel mixture contains 23.2% methane (CH4), 40.8% ethane (C₂H6) and the rest propane (C3H8) by volume. Part A When the fuel mixture contained in a 1.55 L tank, stored at 756 mmHg and 298 K, undergoes complete combustion, how much heat is emitted? (Assume that the water produced by the combustion is in the gaseous state.) Express your answer with the appropriate units. μA Value Units Review | Constants | Periodic Table ?

n the laboratory a "coffee cup" calorimeter, or constant pressure calorimeter, is frequently used to determine the specific heat of a solid, or to measure the energy of a solution phase reaction.A student heats 63.03 grams of chromium to 98.03 °C and then drops it into a cup containing 79.71 grams of water at 23.19 °C. She measures the final temperature to be 28.85 °C.The heat capacity of the calorimeter (sometimes referred to as the calorimeter constant) was determined in a separate experiment to be 1.57 J/°C.Assuming that no heat is lost to the surroundings calculate the specific heat of chromium.   Specific Heat (Cr) =  ____________J/g °C.

In a calorimeter, a 2.0 g sample of magnesium is burned to form MgO. In doing so, 25.5 kJ of energy are released. What is the Heat of Combustion in kJ/mol of magnesium? с 306.2 1.54 x 1025 0.0392 514 25.5

If 10.22 g of a hydrocarbon is combusted inside of a bomb calorimeter with a heat capacity of 722J/C and temperature is raised by 9.5 Chow much heat was lost by the reaction in its combustion?