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scoundrel [369]
3 years ago
14

Urgent please answer properly there are no answer choices.

Chemistry
1 answer:
Bas_tet [7]3 years ago
8 0

The term deforestation denotes the change of intended land use from forest to non-forest (urban, agricultural, etc.), as distinct from the cutting of selected tree stems. ... Thus the global net change in forest cover is the sum of all positive and negative changes in forest area (increases and decreases).

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Element or Compound<br> Krypton<br> Lye<br> Graphite<br> Vinegar
Thepotemich [5.8K]
Krypton- rare gas, element in the noble gases
Lye- sodium hydroxide, compound
Graphite- element
Vinegar- is acetic acid, compound( aqueous solution)
7 0
3 years ago
What's a third reaction? (Chemistry)
OLga [1]

Explanation:

a chemical reaction in which the rate of reaction is proportional to the concentration of each of three reacting molecules

3 0
3 years ago
The activation energy for the isomerization ol cyclopropane to propene is 274 kJ/mol. By what factor does the rate of this react
Bond [772]

Answer:

The rate of the reaction increased by a factor of 1012.32

Explanation:

Applying Arrhenius equation

ln(k₂/k₁) = Ea/R(1/T₁ - 1/T₂)

where;

k₂/k₁ is the ratio of the rates which is the factor

Ea is the activation energy = 274 kJ/mol.

T₁ is the initial temperature = 231⁰C = 504 k

T₂ is the final temperature = 293⁰C = 566 k

R is gas constant = 8.314 J/Kmol

Substituting this values into the equation above;

ln(k₂/k₁) = 274000/8.314(1/504 - 1/566)

ln(k₂/k₁) = 32956.4589 (0.00198-0.00177)

ln(k₂/k₁)  = 6.92

k₂/k₁ = exp(6.92)

k₂/k₁ = 1012.32

The rate of the reaction increased by 1012.32

3 0
4 years ago
Read 2 more answers
What is the mass (in grams) of 5.00 L of NH₃ at STP?
kupik [55]

Answer:

3.79 grams

Explanation:

22.4= STP volume .          Molar mass of NH3=17.031

5.00 NH3 × (1 mol/22.4 L) =0.223

convert to grams->

0.223× 17.031= 3.79

5 0
3 years ago
Design a synthesis of acetophenone from benzene or toluene. 1275q Part 1 out of 5 Choose the best option for the nucleophile pre
Trava [24]

Answer:

A Fridiel craft catalyst will convert benzene to acetophenone.

Permanganate catalyst can be used to convert toluene to acetophenone.

Explanation:

Benzene can be reduced to acetophenone by the addition of anhydrous aluminium chloride, AlCl₃

The mechanism is as follows:

Benzene + Acetyl choloride → acetophenone

To convert toluene to acetophenone, the following steps are necessary:

  • Oxidation of Toluene to Benzoic acid.

     This is done by refluxing toluene with alkaline potassium permanganate         (KMnO₄+ Na₂CO₃).

  • Benzoic acid is converted to Benzoyl chloride by treating with thioyl chloride and heating at about 80 ⁰C.
  • Benzoyl chloride is treated with methyl lithium to form Acetophenone.
5 0
3 years ago
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