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Papessa [141]
3 years ago
8

What best explains why the sun maintains its size and shape?

Chemistry
2 answers:
ivolga24 [154]3 years ago
8 0

Answer:

The sun maintains its spherical shape is due to the radially symmetrical nature  of the gravitational force.

On the other hand, the sun maintains its size and shape due to the external pressure of fusion energy due to the force of gravity.  There is a stable balance between the gas pressure that is directed outward and the force of gravity that is directed inward.

Marina86 [1]3 years ago
3 0
Pressure caused by high temperatures are balanced by gravity
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Which discovery did J. J. Thomson make that improved upon Dalton's atomic theory?
erik [133]

Answer: Atoms contain tiny, negatively charged electrons

Explanation: Thomson's experiments with cathode ray tubes helped him to discover the electron (which Dalton did not know about). Dalton thought that atoms were indivisible particles, and Thomson's discovery of the electron proved the existence of subatomic particles.

3 0
3 years ago
At a certain temperature, Kc = 0.0500 and ∆H = +39.0 kJ for the reaction below, 2 MgCl2(s) + O2(g) → 2MgO(s) + Cl2(g) Calculate
Minchanka [31]

Explanation:

Since, it is shown that the reaction has been reversed. Therefore, value of K_{c} will become \frac{1}{K_{c}}.

Hence, new K_{c'} = \frac{1}{K_{c}}

                                      = \frac{1}{0.0500}

                                      = 20

Also, the number of moles of each reactant has been halved. So, K_{c''} for the reaction MgO(s) + \frac{1}{2}Cl2(g) → MgCl_{2}(s) + \frac{1}{2} O2(g) will also get halved.

Therefore,     K_{c''}  = K_{c'} = (20)^{0.5}

                               = 4.47

As the value of \Delta H is given as +39.0 kJ. So, it means that the reaction is endothermic in nature. So, energy of reactants will be more than the products. Hence, according to Le Chatelier's principle reaction will move in the forward direction.

As a result, K_{c} will also increase with increase in temperature.

6 0
4 years ago
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Answer: ending results

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What Do You Think It Means To Have a Balanced Or Unbalanced Chemical Equation?
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Answer:

A balanced equation is an equation for a chemical reaction in which the number of atoms for each element in the reaction and the total charge is the same for both the reactants and the products.

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Convert 7.72 years into days.
Lelu [443]

Answer:2817.8

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