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Ivan
3 years ago
7

In the modern periodic table when elements are arranged according to their atomic

Chemistry
1 answer:
9966 [12]3 years ago
3 0
In the modern periodic table when elements are arranged according to their atomic number.
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What is an electron configuration?
Ulleksa [173]

In atomic physics and quantum chemistry, the electron configuration is the distribution of electrons of an atom or molecule (or other physical structure) in atomic or molecular orbitals. For example, the electron configuration of the neon atom is 1s² 2s² 2p⁶, using the notation explained below.

4 0
3 years ago
Methane to acetylene?? ​
Anestetic [448]

Answer:

For me it's Methane

3 0
3 years ago
Morphine has the formula c17h19no3. it is a base and accepts one proton per molecule. it is isolated from opium. a 0.685 −g samp
kotykmax [81]
2 C₁₇H₁₉NO₃ + H₂SO₄ → Product
Moles of H₂SO₄ = M x V(liters) = 0.0116 x 8.91/1000 = 1.033 x 10⁻⁴ mole 
moles of morphine = 2 x moles of H₂SO₄ = 2.066 x 10⁻⁴
Mass of morphine = moles x molar mass of morphine = 2.066 x 10⁻⁴ x 285.34 
                             = 0.059 g
percent morphine = \frac{mass of morphine}{mass of opium} x 100
                             = \frac{0.059}{0.685} x 100 = 8.6 %   
7 0
3 years ago
Mr. Jones, the science teacher, tells his students that energy cannot be created; it must be captured from the environment. He i
taurus [48]

The law of conservation of energy or first law of thermodynamics

Explanation:

From the context we can infer that Mr. Jones was describing the law of conservation of energy.

According to the law of conservation of energy:

  "energy is not created nor destroyed by can be transformed from one form to another" .

  The captured energy is a form of energy and it is change into other forms in the ecosystem.

Energy is initially captured in the ecosystem by plants.

learn more:

Laws of thermodynamics brainly.com/question/3564634

#learnwithBrainly

6 0
3 years ago
Calculate the mass of O2 produced if 3.450 g potassium chlorate is completely decomposed by heating in presence of a catalyst (m
sergiy2304 [10]

The reaction is:

2 KClO3(s) → 3 O2(g) + 2 KCl(s) <span>

<span>A catalyst simply lowers the activation energy so MnO2 is not part of the overall reaction.

By stoichiometry: 

<span>3.45 g KClO3 x 1 mol/ 122.55g KClO3 x 3 mol O2/ 2 mol KClO3 x 31.99g/ 1 mol O2 = 331.096/ 245.1 = 1.35 grams O2 produced 

Answer:
1.35 grams O2</span></span></span>
3 0
3 years ago
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