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wariber [46]
4 years ago
11

How many joules in a calorie

Chemistry
1 answer:
Tanya [424]4 years ago
8 0

Answer:

4184

Explanation:

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Through the vibration of particles in a medium.
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What does the kinetic theory state?
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Matter is made up of particles that are constantly moving. All particles have energy, but the energy varies depending on the temperature the sample of matter is in.
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Which group of archaea are chemoautotrophic anaerobes that use hydrogen as an electron donor and sulfur compounds as terminal el
vodomira [7]

The group of archaea that are chemoautotrophic anaerobes that use hydrogen as an electron donor and sulfur compounds as terminal electron acceptors are the

Thermoacidophiles.

<h3>What are chemoautotrophic anaerobes?</h3>

The chemoautotrophic anaerobes are those organisms that derive energy for survival through the reduction of the following compounds:

  • CO2 to CH4, or

  • SO4 to H2S.

Thermoacidophiles is a typical example of the group of archaea that are chemoautotrophic anaerobes that use hydrogen as an electron donor and sulfur compounds as terminal electron acceptors.

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7 0
2 years ago
Find the hydrogen ion concentration of a saturated solution of calcium hydroxide whose ph is 13. 1
salantis [7]

The pH of the solutions is 12.67.  

     

<h3>What is pH of a Solution?</h3>

pH is the measurement of how acidic or basic a solution is. The range of pH values is from 0 to 14. Lower pH values mean higher acidity, while higher pH means higher basicity. If the pH value is equal to 7, then the solution is neutral.

To calculate the pH of the solution, a few approaches are possible. Here, the pOH of the solution is calculated first using the molar concentration of  OH^{-1} ions. Because pH + pOH = 14, the pH of the solution can then be calculated by subtracting pOH from 14.

Because 2 moles of OH^{-1} ions are formed per mole of Ca(OH)_{2}dissolved, the pOH of a saturated Ca(OH)_{2} solution at  20^{.C} is,  

Concentration (C_{OH}) of OH^{-1} ions,

          C_{OH}   = 0.02335 mol Ca(OH)_{2}/L  X 2 mol OH^{-1} /1 mol Ca(OH)_{2}

            C_{OH} = 0.0467 mol OH^{-1}/L

*pOH of saturated Ca(OH)_{2} solution,

                                   pOH = -log [C_{OH}]

                                   pOH = -log [0.0467 mol OH^{-1}/L ]            

                                  pOH = 1.33  

*pH of saturated Ca(OH)_{2} solution,

                                   pH = 14 - 1.33

                                   pH = 12.67

Hence, the pH of the solutions is 12.67.

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4 0
2 years ago
Which term describes the amount of order in a system
Ivahew [28]

Answer:

entropy

Explanation:

3 0
3 years ago
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