The bond dissociation energy for nitrogen is 941 kj/mol. what is this value in calories

1 answer:

muminat4 years ago

6 0

If 1 kj/mol is 0.239 kilocalories/ mol, then 941 kj/mol is 224.904 kcal/mol or 224904 cal/mol. They both are energy units. The joule is the International System unit. It is ultimately defined in terms of the meter, kilogram, and second. One calorie is the amount of heat required to raise the temperature of 1 gram of water by 1Â°C

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Describe how the proton, electron and neutron were experimentally discovered.

alexandr1967 [171]

The discovery of protons can be attributed to Rutherford. ... Given the discoveries of electrons in 1897 by Thomson, Rutherford and other scientists decided that a positively charged particle must exist to center the electron to create equally neutral atoms. Thomson proposed the name 'positive rays'.

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3 years ago

i have an unknown volume of gas at a pressure of 0.50 atm a temperature of 325 k. If i raise the pressure to 1.2 atm, decrease t

Ronch [10]

Assuming that the number of mols are constant for both conditions:
$\frac{P_1V_1}{T_1} = \frac{P_2V_2}{T_2}$
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$
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3 years ago

Name 3 methods of separating heterogeneous mixtures.

inn [45]

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3 years ago

In all measurements, you are looking for values that are accurate. Pretend that a pebble with a known mass of 0.567 g was massed

givi [52]

Answer:

The correct answer is option c, that is, being neither precise nor accurate.

Explanation:

Obtaining the experimental values that come almost close to the true value is termed as accuracy. On the other hand, precision is obtaining experimental values continuously, which may come either far away or near to the true value.

Based on the given information, it is clear that 0.554 grams, that is, the third value obtained from the experiment is showing some closeness to the true value, which is 0.567 grams. While, neither any of the other values are close or is coming near to the true value. This shows that the measurements are an illustration of being neither precise nor accurate.

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4 years ago

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nata0808 [166]

Answer:

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Explanation:

This fact would explain that electrons are dispersed in layers or levels around the nucleus of the atom and therefore, atoms that have more electrons occupy more space, because the number of layers of which the atom consists increases. The maximum number of electrons that a layer or level can have is 2n ^ 2.

In order to fully describe the electron within the hydrogen atom, we need to enter a fourth quantum number to those already known. Said fourth quantum number is represented by the letters ms, and is known as the quantum number of spin, which is closely related to the magnetic properties of electrons. The quantum number ms can only have two different values, +1/2 or -1/2. To electrons whose values of ms are equal, it is said that they have what is known as parallel spins, however, if the values that present more are different it is said that they have opposite spins or also called antiparallels.

In order to describe an orbital, three quantum numbers (the numbers n, l and ml) are needed, at the same time that an electron that is in an atom is given by a combination of four quantum numbers, the main three plus the number ms . Pauli's exclusion principle tells us that in an atom it is impossible for two electrons to coexist with the four identical quantum numbers. According to this principle, in an atomic type orbital, which is determined by the quantum numbers n, l, and ml, there can only be two electrons: one of them with a positive spin +1/2 and another with its opposite spin negative -1/2.

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3 years ago