164 Answered Questions for the topic thermodynamics

12d

#### Specific heat capacity of water

I’m doing an experiment in physics about the heat capacity of water and I have questions that I don’t understand- A little info->Task/Mission- Determine the specific heat capacity of the water. ...
more

21d

#### Thermochemistry

38.5 g of ammonium nitrate was added to 100.0 mL of water. The initial temperature of the water was 25.0 °C. After dissolution, the water temperature was measured at 5.80 °C. What is the enthalpy...
more

Thermodynamics Chemistry

26d

#### Question about Chemistry

What is the change in internal energy of a system if the surroundings absorb 145 J of heatfrom the system while doing 98 J of work on the system?

#### Thermochemistry. Answer, step by step please. (show work)

1N2 (g) + 3H2 (g) = 2NH3 (g) ∆H = -91.2 kJ a. Is this exothermic or endothermic? b. Rewrite the equation with the energy as either a reactant or a product. c. What quantity of heat is released...
more

#### Thermochemistry. Answer, step by step please. (show work)

1) 2C (s) + 2H2 (g) 1C2H4 (g) ∆H = 52.3 kJ a. Is this exothermic or endothermic?b. Rewrite the equation with the energy as either a reactant or a product.c. What volume of Ethene gas can be...
more

#### Honors High School Chemistry

What is the mass of CO2 (carbon dioxide) and H2O (water) formed from the reaction of 1 mole each of n-pentane, n-hexane, n-heptane, and n-octane with an excess of O2 (oxygen gas)? Assume 100%...
more

Thermodynamics Physics

09/19/21

#### Determine how high the combustion of 1.000 mol of CO could lift a 1.00 kg mass near the surface of the earth

Carbon monoxide is used as the fuel for a Carnot engine with a high temperature of 450 o C and a cool temperature of 100 o C. Determine how high the combustion of 1.000 mol of CO could lift a 1.00...
more

#### Thermodynamics Basic principles, concept and definitions

Using local g = 9.807 m/s^2, and that its variation is -0.003 ft/s^2 per 1000 ft ascent. Find the height in meters where the weight of a given man is reduced by 0.3%

#### Thermodynamics Basic principles, concept and definitions

A garden hose attached with a nozzle is used to fill a 10 gallon bucket. The inner dia of the hose is 2 cm and it reduces to 0.8 cm at the nozzle exit. If it takes 50 seconds to fill the water...
more

08/29/21

#### What does the change of enthalpy per mole of oxygen in a combustion reaction say about the amount of energy that can be released?

For example, if -445.7 kJ is released per 1 mole of oxygen in the combustion of ethane, what does this say about the reaction?

07/15/21

#### I am very lost on how to solve this: Grade 12 chemistry

In the following reaction, the initial rate of production of N2O gas is 0.51 mol/(L*s) What is the rate of loss of NO3NO(g) ---> N2O(g) + NO2(g)

06/02/21

#### Chromatography and CO2 reduction

How can chromatography and CO2 reduction help combat climate change? I know that chromatography is a technique for the separation of a mixture but I don’t how it might help in combating the climate...
more

Thermodynamics Chemistry

05/12/21

#### Calculating Enthalpy, Entropy, and Molar Enthalpy in a calorimeter experiment? PLEASE HELP!

When 3g of Ammonium Chloride is added to 10ml of water in a calorimeter, the temperature over a five-minute period drops from 27.1 degrees celsius to 19.8 degrees celsius. The table of the results...
more

Thermodynamics Chemistry

05/10/21

#### Calculating Enthalpy in a Calorimeter Experiment- PLEASE HELP!

When 3g of Ammonium Chloride is added to 10ml of water in a calorimeter, the temperature over a five-minute period drops from 27.1 degrees celsius to 19.8 degrees celsius. The table of the results...
more

Thermodynamics Chemistry

04/28/21

#### Question about phase change calorimetry! Help

Hello, so we've recently conducted a calorimetry experiment wherein we had to mimic an isolated system by melting ice cubes in hot water.The questions are:
Calculate the heat exchanged in the...
more

Thermodynamics Chemistry

04/14/21

#### The following cell has a potential of 0.10 V at 25oC. What is the pH of the solution in the cathode compartment?

Ni(s) | Ni2+(aq) (1.0 M) || H+ (? M) | H2(g) (1.0 atm) | Pt(s)

Thermodynamics Chemistry

04/09/21

#### I2(g) + Cl2(g) < ==== > 2 ICl(g) An equilibrium mixture of the above contains 0.0100 atm I2(g), 0.0100 atm Cl2(g), and 0.0900 atm ICl(g) at 298 K. Calculate the Delta G at standard condition.

This was a multiple choice question. I don't know what I was doing wrong. I tried using the formula: delta G= delta G° + RT ln(Q)I got delta G° = -30440 J/mol by using the Gf table 2(-5.52)-19.4+0...
more

04/08/21

#### Predict the sign of ΔS for the following reactions. Then predict whether the reaction is spontaneous, non-spontaneous, or dependent on the magnitude of ΔH, ΔS and temperature.

a.) Na2CO3 (s) Na2O (s) + CO2 (g) (endothermic) b.) 2NF3 (l) N2 (g) + 3F2(g) (exothermic) c.) 2XeO3 (s) 2Xe (g) + 3O2(g) (exothermic)

#### Change in Droplet Temperature

A drop of rain falls from a height of 300 m in relation to the ground. The drop first falls uniformly accelerated with an acceleration of 6 m/s^2. At a height of 50 m from the ground the drop is...
more

#### How can I use standard entropies and heats of formation to calculate ΔGƒ° at a certain temperature (°C)?

Use standard entropies and heats of formation to calculate ΔGƒ° at 25°C for the following compounds:a) ammonium nitrate (s)b) chloroform, CHCl3(l)c) potassium chloride (s)

Thermodynamics Chemistry

03/11/21

#### Calculate ΔS° for each of the following reactions.

a) 2HNO3(l) + 3H2S(g) --> 4H2O(l) + 2NO(g) + 3S(s)b) PCl5(g) + 4H2O(l) --> 5Cl-(aq) + H2PO4-(aq) + 6H+(aq)c) MnO4-(aq) + 3Fe2+(aq) + 4H+(aq) --> 3Fe3+(aq) + MnO2(s) + 2H2O(l)

#### (Entropy, ΔS°) Predict the sign of ΔS for the following.

a) a lake freezingb) precipitating lead chloridec) a candle burningd) weeding a garden

02/14/21

#### 100 g of ice at 0 ºC is added to an insulated chamber containing 20 g of steam at 100 ºC. What is the final temperature of the 120 g of water

I began by saying the following: Qabsorbed by ice=Qreleased by steam ...
more

Thermodynamics Physical Chemistry

12/18/20

#### Help please ASAP!

A sample consisting of 2.0 mol CO2 occupies a fixed volume of 15.0 dm3at 300 K. When it is supplied with 2.35 kJ of energy as heat its temperature increases to 341 K. Assuming that CO2 is described...
more

#### I'm very confused about this please help! (Hess Law)

Using the equations 2 C₆H₆ (l) + 15 O₂ (g) → 12 CO₂ (g) + 6 H₂O (g)∆H° = -6271 kJ/mol 2 H₂ (g) + O₂ (g) → 2 H₂O (g) ∆H° = -483.6 kJ/mol C (s) + O₂ (g) → CO₂ (g) ∆H° = -393.5 kJ/mol Determine the...
more

## Still looking for help? Get the right answer, fast.

Ask a question for free

Get a free answer to a quick problem.

Most questions answered within 4 hours.

#### OR

Find an Online Tutor Now

Choose an expert and meet online. No packages or subscriptions, pay only for the time you need.