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soldi70 [24.7K]
3 years ago
8

How do scientists test ideas about chemical evolution?

Chemistry
2 answers:
maksim [4K]3 years ago
4 0
I think they test ideas about chemical evolution by doing experiments. Hope this helps
Lubov Fominskaja [6]3 years ago
4 0

Answer: By doing experiment.

Explanation:

Chemical evolution can be define as the generation or synthesis of a new chemical from reactants.

Chemical evolution occurs by doing experiment. The results of the experiments will support the cause of the chemical evolution.

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1.2 moles of (NH4)3PO3
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1.2 moles of (nph4)3po3 is.......159.6 grams
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4. Write down the differentiate between a. Atom and molecules​
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Atoms are single neutral particles. Molecules are neutral particles made of two or more atoms bonded together.

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Dr. Patel and her team have been using GPS to track two plates that are moving toward each
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3 years ago
Hydrogen produced from a hydrolysis reaction was collected over water and the following data was compiled.
Shkiper50 [21]

Answer:

  • 0.00358 mol

Explanation:

<u>1) Data:</u>

a) V = 93.90 ml

b) T = 28°C

c) P₁ = 744 mmHg

d) P₂ = 28.25 mmHg

d) n = ?

<u>2) Conversion of units</u>

a) V = 93.90 ml × 1.000 liter / 1,000 ml = 0.09390 liter

b) T = 28°C = 28 + 273.15 K = 301.15 K

c) P₁ = 744 mmHg × 1 atm / 760 mmHg = 0.9789 atm

d) P₂ = 28.5 mmHg × 1 atm / 760 mmHg = 0.0375 atm

<u>3) Chemical principles and formulae</u>

a) The total pressure of a mixture of gases is equal to the sum of the partial pressures of each gas. Hence, the partical pressure of the hydrogen gas collected is equal to the total pressure less the vapor pressure of water.

b) Ideal gas equation: pV = nRT

<u>4) Solution:</u>

a) Partial pressure of hydrogen gas: 0.9789 atm - 0.0375 atm = 0.9414 atm

b) Moles of hygrogen gas:

pV = nRT ⇒ n = pV / (RT) =

n =  (0.9414 atm × 0.09390 liter) / (0.0821 atm-liter /K-mol × 301.15K) =

n = 0.00358 mol (which is rounded to 3 significant figures) ← answer

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