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Murljashka [212]
3 years ago
12

A scientist finds an organism that cannot move. It has many cells and get food from its environment. In which Kingdom does it

Chemistry
1 answer:
Allisa [31]3 years ago
7 0
An organism that does not move on its own and makes food from its environment is a producer.
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59x<br> 56x<br> 35<br> 35<br> What do they have in common
wel

Answer:

5

Explanation:

They have 5 in common but different x

8 0
3 years ago
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If a notebook has a mass of 50 grams, a length of 12 cm, a width of 5 cm and a height of 1cm, what is the volume of the notebook
Wewaii [24]

Answer:

I'm pretty sure the answer is 60cm.

Explanation:

Volume = L×W×h

6 0
3 years ago
Consider the perbromate anion. What is the central atom? Enter its chemical symbol. How many lone pairs are around the central a
Yanka [14]

Answer:

See explanation

Explanation:

The central atom in the perbromate ion is bromine. The chemical symbol of bromine is Br. There are no lone pairs around the central bromine atom. The ion is tetrahedral in shape hence we expect a bond angle of 109°. 27 which is the ideal tetrahedral bond angle. The actual bond angle of the prebromate ion is 109.5°. The perbromate ion is BrO4^-

The observed bond angle is very close to the ideal value because of the absence of lone pairs of electrons from the central atom in the ion.

8 0
3 years ago
The rate constant for a certain reaction is measured at two different temperatures:
Talja [164]

Answer: The activation energy Ea for this reaction is 22689.8 J/mol

Explanation:

According to Arrhenius equation with change in temperature, the formula is as follows.

ln \frac{k_{2}}{k_{1}} = \frac{-E_{a}}{R}[\frac{1}{T_{2}} - \frac{1}{T_{1}}]

k_1 = rate constant at temperature T_1 = 2.3\times 10^8

k_2 = rate constant at temperature T_2 = 4.8\times 10^8

E_a= activation energy = ?

R= gas constant = 8.314 J/kmol

T_1 = temperature = 280.0^0C=(273+280)=553K

T_2 = temperature = 376.0^0C=(273+376)=649K

Putting in the values ::

ln \frac{4.8\times 10^8}{2.3\times 10^8} = \frac{-E_{a}}{8.314}[\frac{1}{649} - \frac{1}{553}]

E_a=22689.8J/mol

The activation energy Ea for this reaction is 22689.8 J/mol

3 0
3 years ago
Why can you never see the far side of the mood from earth?
horsena [70]
The answer is C, because the moon does rotate it just rotates at the perfect time for us to never side the other side of it.  
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3 years ago
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