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Natalija [7]
3 years ago
5

Electric lights will not come on unless their electrical circuit is a?

Chemistry
1 answer:
nordsb [41]3 years ago
6 0

Answer:

closed circuit

Explanation:

Hope this helps- Good luck! ^w

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How many molecules are present in 4.5<br> moles of H2O?
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Answer:

Mole of the H2O = 4.5

Number of molecules =4.5 multipled by avogadro's number.

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Rubbing alcohol is less polar than water. Both are liquids at room temperature which One boils first? why?
Sergeeva-Olga [200]

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because both liquid are made from different substances.

Explanation:

8 0
3 years ago
Help please !!!!!!!!
Elena L [17]

Answer:

Option B. 2096.1 K

Explanation:

Data obtained from the question include the following:

Enthalpy (H) = +1287 kJmol¯¹ = +1287000 Jmol¯¹

Entropy (S) = +614 JK¯¹mol¯¹

Temperature (T) =.?

Entropy is related to enthalphy and temperature by the following equation:

Change in entropy (ΔS) = change in enthalphy (ΔH) / Temperature (T)

ΔS = ΔH / T

With the above formula, we can obtain the temperature at which the reaction will be feasible as follow:

ΔS = ΔH / T

614 = 1287000/ T

Cross multiply

614 x T = 1287000

Divide both side by 614

T = 1287000/614

T = 2096.1 K

Therefore, the temperature at which the reaction will be feasible is 2096.1 K

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How many milligrams are in 2.89 x 1024 CO2 molecules?
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2,959.36

Explanation:

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