Because Boron likes to lose 3 electrons when it undergoes ionization, we draw a boron ion like a helium atom, with just 2 electrons in the first shell, and 0 in the second

5 0

3 years ago

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Describe the modem system of cassification,

yaroslaw [1]

Answer: The system classifies organisms into eight levels: domain, kingdom, phylum, class, order, family, genus, and species.

Explanation:

The scientific name given to an organism is based on binomial nomenclature.

5 0

3 years ago

For a reaction for which AH = +29.3 kJ/mol and AS = +106 J/mol•K, which of the following statements is true? A) The reaction is

umka2103 [35]

Answer: A) The reaction is spontaneous above 276 K.

Explanation:

According to Gibb's equation:

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

$\Delta G$ = Gibbs free energy

$\Delta H$ = enthalpy change = +29.3 kJ/mol =29300 J/mol

$\Delta S$ = entropy change = +106 J/molK

T = temperature in Kelvin

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

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

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

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

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

$T\Delta S>\Delta H$ for reaction to be spontaneous

$T\times 106 J/molK>29300J/mol$

$T>276K$

Thus the Reaction is spontaneous when temperature is above 276 K.

8 0

3 years ago

Jamal’s teacher has asked the class to use this picture to explain how potential energy transforms to kinetic energy when an obj

qaws [65]

Answer:D

Explanation:

I’ve had this question before. Since it’s stairs, the potential energy would decrease due to height decrease and it will be transformed to kinetic energy

5 0

3 years ago