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Marysya12 [62]
3 years ago
11

Why are cleaning compounds often bases?

Chemistry
1 answer:
Whitepunk [10]3 years ago
7 0
Cleaning agents<span> are substances used to remove dirt, including dust, stains, bad smells, and ... </span>Cleaning agents<span> may also be solvent-</span>based<span> or solvent-containing and are then ... </span>Often<span>, surfactants and corrosion inhibitors are added to the acid.</span>
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3 years ago
A 2.00 kg piece of lead at 40.0°C is placed in a very large quantity of water at 10.0°C,and thermal equilibrium is eventually re
sveticcg [70]

Answer:

Δ S = 26.2 J/K

Explanation:

The change in entropy can be calculated from the formula  -

Δ S = m Cp ln ( T₂ / T₁ )

Where ,

Δ S = change in entropy

m = mass  = 2.00 kg

Cp =specific heat of lead is 130 J / (kg ∙ K) .

T₂ = final temperature  10.0°C + 273 = 283 K

T₁ = initial temperature ,  40.0°C + 273 = 313 K

Applying the above formula ,

The change in entropy is calculated as ,

ΔS = m Cp ln ( T₂ / T₁ )  = (2.00 )( 130 ) ln( 283 K / 313 K )

ΔS = 26.2 J/K

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3 years ago
What is an octet of electrons? Which elements contain an octet of electrons?
8090 [49]

Answer:

Explanation:

Octet, in chemistry, the eight-electron arrangement in the outer electron shell of the noble-gas atoms. This structure is held responsible for the relative inertness of the noble gases and the chemical behaviour of certain other elements.

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Read 2 more answers
2CO + O2 --&gt; 2002
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8 moles I think I’m not sure
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How many grams is needed to make the following solution?
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Answer:

c

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