Demonstrate that, for any known chemical reaction, the Sun's lifetime would be several orders of magnitude...

Demonstrate that, for any known chemical reaction, the Sun's lifetime would be several orders of magnitude smaller than in the case of thermal energy emission (Kelvin-elmholtz time) if such a reaction was responsible for solar luminosity.

Expert Solution

Answer:

Kelvin-Helmholtz time (or lifetime of Sun) = Gravitational Potential Energy of Sun/Luminosity of Sun

or, Lifetime of Sun = (GM/R²)/3.8 X 10²⁶ = 3 X 10⁷ Years

genius_generous answered 2 years ago

Choose a chemical equation for the reaction that will occur, if any, when: (If no reaction...

Choose a chemical equation for the reaction that will occur, if any, when: (If no reaction will occur, choose “no reaction”.) aluminum metal is added to a solution of copper(II) chloride a) 3Al(s) + 2 Cu 2+(aq) → 3Al3+(aq) + Cu (s) b) Al(s) + Cu 2+(aq) → Al3+(aq) + Cu (s) c) no reaction d) 2Al(s) + 3 Cu 2+(aq) → 2Al3+(aq) + 3 Cu (s) mercury metal is added to a solution of magnesium sulfate. a) 2 Hg...

a. What sign of a positive chemical reaction will be observed in the "Reactions of Known...

a. What sign of a positive chemical reaction will be observed in the "Reactions of Known Solutions" tests? b. What three test reagents will be used? Write their correct chemical formulas

The temperature X in degrees Fahrenheit (F) of a particular chemical reaction is known to be...

The temperature X in degrees Fahrenheit (F) of a particular chemical reaction is known to be distributed between 220 and 280 degrees with a probability density function of fX(x) = (x − 190)/3600. A value of X degrees Fahrenheit can be converted to Y degrees Celsius (C) by taking Y = (5/9)(X − 32). Determine the following in both degrees F and degrees C: (a) the mean of the distribution (b) the variance of the distribution (c) the cumulative distribution...

the curing of concrete is a chemical reaction involving the hydration of Portland cement. at any...

the curing of concrete is a chemical reaction involving the hydration of Portland cement. at any time, the rate of increase of the compressive strength S of the concrete is proportional to the difference between its final strength (in this case 5000psi) and the current value of S at any time. a. Write a differential equation for dS/dt , with k unknown at this point. ( the value of k will not be determined until part c) b. Solve the...

There are several classifications of chemical reactions. Please research a reaction and provide its particular classification...

There are several classifications of chemical reactions. Please research a reaction and provide its particular classification and characterization(s).

For a neutralization reaction, would you expected the magnitude of heat transfer (q) to increase, decrease,...

For a neutralization reaction, would you expected the magnitude of heat transfer (q) to increase, decrease, or stay the same if the concentration of only the acid were doubled? Why?

1. The equilibrium point of any chemical reaction represents the most energetically stable state in the...

1. The equilibrium point of any chemical reaction represents the most energetically stable state in the continuum of conditions between pure reactants and pure products. Explain, using the concept of enthalpy (energy) of reaction, why this is the case.

(Chemical Engineering) Why would any gas at STP be considered ideal?

(a) Describe any evidence that a chemical reaction occurred when you added 6 M HCl to...

(a) Describe any evidence that a chemical reaction occurred when you added 6 M HCl to the solution of sodium acetylsalicylate. (b) Explain why the changes that you observed took place. please answer both parts (a) and (b) with drawing stractures as well and explantion.

Explain the regulation of forced breathing. Provide all structures as well as any chemical reactions you would...

Explain the regulation of forced breathing. Provide all structures as well as any chemical reactions you would expect to be involved.

Question

Demonstrate that, for any known chemical reaction, the Sun's lifetime would be several orders of magnitude...

Solutions

Expert Solution

Related Solutions