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1 month ago

Object A has a temperature of 287 Kelvin, object B has a temperature of 374 Kelvin. In what direction will thermal energy flow?

2 answers:

6 0

Thermal energy will transfer from the object at the higher temperature to the one at the lower temperature. In this scenario, thermal energy moves from object B to object A.

KiRa [2.9K]1 month ago

6 0

Internal energy found within an object's molecules due to the motion of its particles is referred to as thermal energy. Thermal energy naturally flows from a hotter object to a cooler one when they are in direct contact. For instance, with object A at 287 Kelvin and object B at 374 Kelvin, thermal energy transitions from object B to object A.

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The nitrogen atom of NH2 would have The nitrogen atom of {\rm NH_2} would have blank electrons around the central nitrogen atom.

Alekssandra [3086]

Answer:

(a) The nitrogen atom in contains $NH_2^-$ 8 electrons surrounding the central nitrogen atom.

(b) The nitrogen atom in has $NH_4^+$ 8 electrons around the central nitrogen atom.

Explanation:

The Lewis dot structure illustrates the connections between atoms within a molecule, additionally showing unpaired electrons present in the molecule.In this structure, valence electrons are represented as 'dots'.

Now we will determine the number of electrons linked to the central nitrogen atom in the specified molecule.

(a) The identified molecule is,

$NH_2^-$ Recognizing that nitrogen has '5' valence electrons while hydrogen has '1', we ascertain the total valence electrons in

= 5 + 2(1) + 1 = 8

According to the Lewis dot structure, this reveals 4 bonding and 4 non-bonding electrons.

$NH_2^-$ From the Lewis structure, we conclude that the nitrogen atom in

has 8 electrons surrounding it.

(b) The identified molecule is, $NH_2^-$

Knowing that nitrogen has '5' valence electrons and hydrogen has '1' valence electron, the total number of valence electrons for $NH_4^+$ = 5 + 4(1) - 1 = 8

In the Lewis dot structure, there are 8 bonding electrons and 0 non-bonding electrons.

This leads us to conclude that the nitrogen atom in

contains 8 electrons surrounding it. $NH_4^+$

$NH_4^+$

Recognizing nitrogen’s '5' valence electrons and hydrogen’s '1' brings the total valence electrons for

= 5 + 3(1) = 8 $NH_3$ Utilizing the Lewis dot structure indicates there are 6 bonding and 2 non-bonding electrons.

According to the Lewis dot structure, we conclude that the nitrogen atom in

has 8 electrons surrounding it.

$NH_2^-$

3 0

1 month ago

In NMR spectroscopy, the strong magnetic field establishes an energy gap between the alpha and beta spin states, which enables t

Anarel [2989]

Answer:

In the context of NMR spectroscopy, a significant magnetic field creates an energy difference between the alpha and beta spin states, which allows nuclei to absorb RF radiation, ultimately leading to the excitation of a nucleus from a +1/2 spin state to a -1/2 spin state.

Explanation:

3 0

2 months ago

A chemical reaction in which bonds are broken is usually associated with ________. a synthesis forming a larger molecule the rel

alisha [2963]

The response to this inquiry involves energy release. The bonds holding molecule atoms act as energy reserves. One method of energy release occurs when these bonds are severed, allowing energy to disperse outward. This breaking leads to smaller molecules rather than the creation of a larger one.

4 0

2 months ago

Fructose is a type of sugar found in fruits and honey. Analysis of a 2.00-g

Anarel [2989]

The molecular formula is C6H12O6.

3 0

1 month ago

A saturated solution of potassium iodide contains, in each 100 mL, 100 g of potassium iodide. The solubility of potassium iodide

KiRa [2933]

Answer:

The specific gravity of the saturated solution is 2

Explanation:

Specific gravity represents the ratio of the density of a solution, in this case, a saturated potassium iodide (KI) solution, to the density of water. Assuming the density of water is 1:

Specific gravity = Density

Density itself is defined as the mass divided by volume.

In 100mL of water, the mass of dissolve-able KI is:

100mL * (1g KI / 0.7mL) = 143g of KI

This indicates that all 100g of KI dissolves (Mass solute)

With 100mL of water corresponding to a mass of 100g (Mass solvent)

The overall mass of the solution computes to 100g + 100g = 200g

In a volume of 100mL, the solution's density is:

200g / 100mL = 2g/mL.

Specific gravity is a dimensionless quantity, thus the specific gravity of the saturated solution is 2

5 0

1 month ago