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3 years ago

What is a quantum of energy?

Chemistry

2 answers:

Lubov Fominskaja [6]3 years ago

7 0

Answer:

In chemistry and physics, quantum refers to a single packet of matter or energy. In practical use, it refers to the minimum amount of energy required for a change or the minimum value of any physical property in an interaction. Quantum is the singular form of the word. Quanta is the plural form of the term.

Explanation:

gladu [14]3 years ago

5 0

Answer:

quantum of energy

Explanation:

The term quantum of energy means that the energy is not transferred continuously but as discrete packets of energy. Amount of energy required to move an electron from one energy level to another. The amount of energy an electron gains or loses is. Not always the same. The higher energy levels are.

hope it helps!

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Consider the reaction. mc015-1.jpg How many grams of N2 are required to produce 100.0 L of NH3 at STP?

Nadusha1986 [10]

The grams of N2 that are required to produce 100.0 l of NH3 at STP

At stp 1moles = 22.4 l. what about 100.0 L of NH3

= 100 / 22.4 lx1 moles = 4.46 moles of NH3

write the reacting equation

N2+3H2 =2NH3
by use of mole ratio between N2 to NH3 which is 1:2 the moles of N2 =4.46/2 =2.23 moles of N2

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The decomposition of NI3 to form N2 and I2 releases −290.0 kJ of energy. The reaction can be represented as 2NI3(s)→N2(g)+3I2(g)

EastWind [94]

Answer:

-7.34 kilo Joules is the change in enthaply when 20.0 grams of nitrogen triiodide decomposes.

Explanation:

Mass of nitrogen triiodide = 20.0 g

Moles of nitrogen triiodide = $\frac{20.0 g}{395 g/mol}=0.05063 mol$

$2NI_3(s)\rightarrow N_2(g)+3I_2(g), \Delta H_{rxn}=-290.0 kJ$

According to reaction, 2 moles of nitrogen triiodide gives 290.0 kilo Joules of heat on decomposition ,then 0.05063 moles of nitrogen triiodide will give :

$\frac{-290.0 kJ}{2}\times 0.05063=-7.34 kJ$

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3 years ago