3 years ago

What is the electron structure of a beryllium ion with a net ionic charge of +2?

Chemistry

1 answer:

RideAnS [48]3 years ago

4 0

Would be 1S2 as shown with explanation in photo

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True or false The sodium atom becomes a sodium ion with a charge of +1

ddd [48]

Answer:

True

Explanation:

The sodium atom does become a sodium ion with a charge of +1.

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2 years ago

(40) If a hypothesis is proven correct, a theory is formulated. True or false

Snezhnost [94]

Answer: False, I believe.

Explanation: If a Hypothesis is proven correct, then another experiment to strengthen that Hypothesis is should be done.

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2 years ago

When sugar dissolves in water are covalent bonds broken?

Amanda [17]

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3 years ago

Calculate the standard entropy of vaporization of ethanol, C2H5OH, at 285.0 K, given that the molar heat capacity at constant pr

MArishka [77]

Answer: The standard entropy of vaporization of ethanol is 0.275 J/K

Explanation:

$C_2H_5OH(l)\rightleftharpoons C_2H_5OH(g)$

Using Gibbs Helmholtz equation:

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

For a phase change, the reaction remains in equilibrium, thus $\Delta G=0$

$\Delta H=T\Delta S$

Given: Temperature = 285.0 K

$\Delta H=78.3J/mol$

Putting the values in the equation:

$78.3J=285.0K\times \Delta S$

$\Delta S=0.275J/K$

Thus the standard entropy of vaporization of ethanol is 0.275 J/K

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3 years ago

Which of the following includes a wedge. A.axe B.file c.bolt d.hammer

faust18 [17]

The correct answers would be A, and D

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3 years ago

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