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Scrat [10]
3 years ago
7

The minimum amount of energy necessary to start a chemical reaction is

Chemistry
2 answers:
emmainna [20.7K]3 years ago
8 0

Answer:

Activation energy is the answer

Here's a Fun Fact: Enzymes reduce the Activation energy requirement, letting the chemical reaction happen more efficiently

Arturiano [62]3 years ago
6 0
Activation energy is the correct answer
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What is the temperature of a 100 liter container having 1 mole of an ideal gas at a pressure of 20 kilopascals? (Given: R = 8.31
Shalnov [3]
For this case, we use the equation for an ideal gas which is expressed as PV=nRT where P is the pressure, V is the volume, n is the number of moles and T is the temperature. We calculate as follows:

PV = nRT
T = PV / nR
T = 20 kPa (100 L) / 1 mol (8.314) 
T = 240.56 K
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How many cm are equal to 1.45 m
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There are 145 centimeters in 1.45 meters.

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What does WHMIS mean?
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As you move across the period on the periodic table what pattern can be described about the electron configurations?
xeze [42]

Answer:

Elements in the same period have same number of electronic shell and electron is increased by one in every coming element with in same electronic shell.

Explanation:

Consider the second period of periodic table. This period consist of eight elements lithium, beryllium, boron, carbon, nitrogen, oxygen, fluorine and neon.

Electronic configuration of lithium:

Li₃ = [He] 2s¹

Electronic configuration of beryllium:

Be₄ = [He] 2s²

Electronic configuration of boron:

B₅ = [He] 2s² 2p¹

Electronic configuration of carbon:

C₆ = [He] 2s² 2p²

Electronic configuration of nitrogen:

N₇ = [He] 2s² 2p³

Electronic configuration of oxygen:

O₈ = [He] 2s² 2p⁴

Electronic configuration of fluorine:

F₉ = [He] 2s² 2p⁵

Electronic configuration of neon:

Ne₁₀ = [He] 2s² 2p⁶

All these elements present in same period having same electronic shell and number of electron increased by 1.

4 0
3 years ago
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