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3 years ago

Is aluminum a liquid at 1000 kelvin

Chemistry

1 answer:

daser333 [38]3 years ago

3 0

Yes you are correct

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TRUE - FALSE

inessss [21]

Answer:

True

Explanation:

4 0

3 years ago

What is the approximate energy of a photon having a frequency of 4 x 10^7 Hz? (h = 6.6 x 10^-34 J . s)

BigorU [14]

Answer:

2.64 × $10^{-26}$ J

Explanation:

I think you should mark it a physics question instead but anyway.

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The Planck equation should be applied:

E = hv , while E is energy of proton; h is Planck constant; and v is frequency.

E = 6.6 × $10^{-34}$ × 4 × $10^{7}$

= 6.6 × 4 × $10^{-27}$

= 2.64 × $10^{-26}$ J

3 0

3 years ago

Who is responsible for the impacts of overfishing?

GarryVolchara [31]

Answer:

Japan, China, the U.S., Indonesia, Chinese Taipei and South Korea have been named by Pew Charitable Trusts on a “shame list” of countries responsible for overfishing tuna in the Pacific. According to Pew, the “Pacific 6” are responsible for 80 percent — 111,482 metric tons in 2011 — of the annual catch of bigeye tuna.

Hope it will help you

7 0

3 years ago

A reaction that is second-order in one reactant has a rate constant of 1 × 10–2 L/mol · s. If the initial concentration of the r

Harlamova29_29 [7]

Answer : It take time for the concentration to become 0.180 mol/L will be, 277.8 s

Explanation :

The integrated rate law equation for second order reaction follows:

$k=\frac{1}{t}\left (\frac{1}{[A]}-\frac{1}{[A]_o}\right)$

where,

k = rate constant = $1\times 10^{-2}mol/L.s$

t = time taken = ?

[A] = concentration of substance after time 't' = 0.180 mol/L

$[A]_o$ = Initial concentration = 0.360 mol/L

Putting values in above equation, we get:

$1\times 10^{-2}=\frac{1}{t}\left (\frac{1}{0.180}-\frac{1}{0.360}\right)$

$t=277.8s$

Hence, it take time for the concentration to become 0.180 mol/L will be, 277.8 s

7 0

4 years ago

As the elements of Group 17 are considered in order of increasing atomic number, there is an increase in

11111nata11111 [884]

Alright so the way I see it by definition of increasing atomic number of the halogen family, that means you're going down the periodic table. Therefore, there's an increase in the number of outer shells. The atomic radius would increase because that's basically the distance between the nucleus of the element to the outermost electron. More electron shells=Greater distance=Larger atomic radius

3 0

3 years ago