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maxonik [38]
3 years ago
12

What is the chemical formula for the compound formed from potassium and sulfur

Chemistry
1 answer:
irakobra [83]3 years ago
4 0
Equation: 2K + S --> K2S Chemical formula: K2S
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Explain why organic reactions occur at a slower rate than inorganic reactions. What do chemists use to speed these reactions up?
8_murik_8 [283]
The organic particles  are molecules. Because of strong covalent bonding in the molecule, organic compounds do not react quickly. Reactions with organic compounds are generally slower than inorganic reactions due to this fact. 

Increasing temperature speeds up a reaction because of there being more collisions and those collisions have higher energy. Also the high concentration of the chemicals, particle size and there being a suitable catalyst present. ( Though this process is harmful should it be used in modifying results in food grains and meats.) 


5 0
3 years ago
A chemist must dilute 47.2 mL of 150. mM aqueous sodium nitrate solution until the concentration falls to . He'll do this by add
erma4kov [3.2K]

Answer:

0.295 L

Explanation:

It seems your question lacks the final concentration value. But an internet search tells me this might be the complete question:

" A chemist must dilute 47.2 mL of 150. mM aqueous sodium nitrate solution until the concentration falls to 24.0 mM. He'll do this by adding distilled water to the solution until it reaches a certain final volume. Calculate this final volume, in liters. Be sure your answer has the correct number of significant digits. "

Keep in mind that if your value is different, the answer will be different as well. However the methodology will remain the same.

To solve this problem we can<u> use the formula</u> C₁V₁=C₂V₂

Where the subscript 1 refers to the concentrated solution and the subscript 2 to the diluted one.

  • 47.2 mL * 150 mM = 24.0 mM * V₂
  • V₂ = 295 mL

And <u>converting into L </u>becomes:

  • 295 mL * \frac{1 L}{1000mL} = 0.295 L

6 0
3 years ago
A chemist has 2.0 mol of methanol (CH3OH). Molar mass of menthanol is 32.0g/mol. What is the mass, in grams, of the sample
Mademuasel [1]
2.0 mol x 32.0 g / 1 mol =
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3 years ago
He atomic number of carbon is 6. carbon-14 is heavier than carbon-12 because the atomic nucleus of carbon-14 contains _____ neut
Marta_Voda [28]
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5 0
3 years ago
Le Châtelier's principle states that if a stress is applied to a system at equilibrium, the system will shift to relieve that st
zhuklara [117]

Answer:

1) Add more sulfate ions.

2) 1 M K₂SO₄.

Explanation:

<em>1) Which of the following actions would shift this reaction toward solid barium sulfate?</em>

<em></em>

  • Le Châtelier's principle states that if a stress is applied to a system at equilibrium, the system will shift to relieve that stress and attain the equilibrium again.

Add more sulfate ions will increase the concentration of the products side, so the reaction will be shifted towards the reactants side to relieve the stress and attain the equilibrium again.

<em>So, the right choice is: Add more sulfate ions.</em>

<em></em>

<em>2) In which of the following would barium sulfate be least soluble?  </em>

The answer is 1 M K₂SO₄, it has a common ion effect of SO₄⁻ ions that increase the concentration of the products side, so the reaction will be shifted towards the reactants side to relieve the stress and attain the equilibrium again.

<em>So, the solubility will decrease.</em>

3 0
3 years ago
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