3 years ago

Who discovered atomic structure

1 answer:

4 0

John Dalton

Although the concept of the atom dates back to the ideas of Democritus, the English meteorologist and chemist John Dalton formulated the first modern description of it as the fundamental building block of chemical structures.

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Consider a reaction that has a positive ΔH and a positive ΔS. Which of the following statements is TRUE?A) This reaction will be

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Answer: A) This reaction will be spontaneous only at high temperatures

Explanation:

$\Delta G$ = +ve, reaction is non spontaneous

$\Delta G$ = -ve, reaction is spontaneous

$\Delta G$ = 0, reaction is in equilibrium

Using Gibbs Helmholtz equation:

$\Delta G=\Delta H-T\Delta S$

Given : $\Delta H=+ve$

$\Delta S=+ve$

$\Delta G=(+ve)-T(+ve)$

$\Delta G=(+ve)(-ve)$

Thus the value of $\Delta G$ is negative and spontaneous when temperature is high.

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3 years ago

How does a higher heat capacity affect the amount of time it takes for an object’s temperature to change?

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3 years ago

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lilavasa [31]

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3 years ago

What does the symbol (s) represent when it is next to an atom?

AlekseyPX

Answer:

The symbol for an atom indicates the element via its usual two letter symbol, the mass number as a left superscript, the atomic number as a left subscript (sometimes omitted), and the charge as a right superscript.

Explanation:

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2 years ago

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Answer:

the anwser is; B: increasing its speed

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3 years ago

Who discovered atomic structure​

Who discovered atomic structure