3 years ago

Which energy transformation takes place in a gasoline lawn mower?

Chemistry

2 answers:

8_murik_8 [283]3 years ago

8 0

<span>A lawn mower works by converting chemical energy (energy stored in the gas) to mechanical energy.</span>

fenix001 [56]3 years ago

6 0

Hey there!!

A lawn mower works by converting chemical energy (energy stored in the gas) to mechanical energy.

Hope this helps you and have a great day!!!! I wish you the best of luck (:

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Cycloheptatrienone is stable, but cyclopentadienone is so reactive that it can't be isolated. Taking into account the polarity o

Lorico [155]

Answer and Explanation:

The resonance contributor in cyclopentadienone (as shown in the attachment below) results into the compound having a positive charge on the carbonyl group, C=O which accounts for a highly reactive anti-aromatic 4π system. And this illustrates the reason for its instability.

3 0

3 years ago

Part B Redox titrations are used to determine the amounts of oxidizing and reducing agents in solution. For example, a solution

MissTica

Answer:

0,508g of H₂O₂

Explanation:

For the reaction:

2KMnO₄(aq) + H₂O₂(aq) + 3H₂SO₄(aq) → 3O₂(g) + 2MnSO₄(aq) + K₂SO₄(aq) + 4H₂O(l)

2 moles of KMnO₄ react with 1 mol of H₂O₂.

In the titration, moles of KMnO₄ required were:

1,68M×0,0178L = 0,0299 moles of KMnO₄. Moles of H₂O₂ are:

0,0299 moles of KMnO₄× $\frac{1molH_{2}O_{2}}{2molKMnO_{4}}$ = 0,01495 moles of H₂O₂. As molar mass of H₂O₂ is 34,01g/mol, mass of H₂O₂ was dissolved is: