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LenKa [72]
3 years ago
10

Please explain this to me, it's taking forever for me!

Chemistry
1 answer:
liubo4ka [24]3 years ago
5 0

Answer:

civic cgvvbbbibbbnn bnnnn

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!! HELP WORTH 15 POINTS !!
Nookie1986 [14]

Answer:

B

Explanation:

Because the sharpener is attached to an electrical outlet

4 0
3 years ago
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80.0 liters of oxygen gas is collected over water at 50 degrees celcius. the atomsphereic pressure in the room is 96.00 kPA. wha
Drupady [299]
Partial pressure O2 = total pressure - vapour pressure H2O at 50 deg C 
Vapour pressure H2O at 50 deg C = 12.332 kPa 
= 96.00 kPa - 12.332 kPa = 83.67 kPa
3 0
3 years ago
Which element has two valence electrons?
Colt1911 [192]

Answer:

It is A) Calcium

Explanation:

Calcium has an electronic configuration of 2,8,8,2

6 0
3 years ago
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As a consumer what kind of economic problems do we face?​
alina1380 [7]

Answer:

Benefits. Businesses use consumer spending data in their supply and demand economic calculations. Supply and demand helps businesses produce goods or services at the most favorable consumer price points. ... Consumer spending helps companies determine which products have the most value in the economic marketplace.

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4 0
4 years ago
Cyclobutane, C4H8, consisting of molecules in which four carbon atoms form a ring, decomposes, when heated, to give ethylene. Th
frosja888 [35]

Answer:

The concentration of cyclobutane after 875 seconds is approximately 0.000961 M

Explanation:

The initial concentration of cyclobutane, C₄H₈, [A₀] = 0.00150 M

The final concentration of cyclobutane, [A_t] = 0.00119 M

The time for the reaction, t = 455 seconds

Therefore, the Rate Law for the first order reaction is presented as follows;

\text{ ln} \dfrac {[A_t]}{[A_0]} = \text {-k} \cdot t }

Therefore, we get;

k = \dfrac{\text{ ln} \dfrac {[A_t]}{[A_0]}}  {-t }

Which gives;

k = \dfrac{\text{ ln} \dfrac {0.00119}{0.00150}}  {-455} \approx 5.088 \times 10^{-4}

k ≈ 5.088 × 10⁻⁴ s⁻¹

The concentration after 875 seconds is given as follows;

[A_t] = [A₀]·e^{-k \cdot t}

Therefore;

[A_t] = 0.00150 × e^{5.088 \times 10^{-4} \times 875}  = 0.000961

The concentration of cyclobutane after 875 seconds, [A_t] ≈ 0.000961 M

6 0
3 years ago
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