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Len [333]
3 years ago
5

Which statement best describes the energy of activation?

Chemistry
2 answers:
Furkat [3]3 years ago
6 0

activation energy start off chemical reaction

iren [92.7K]3 years ago
4 0

Answer:

Explanation:

it is more quickly overcome when the temperature increases

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What is the initial temperature (in Celsius) of a 675 ml balloon if the
RoseWind [281]

Answer: 127 (3.s.f)

Explanation:

Boyle's law states that Volume x pressure = constant

Therefore let's first find the constant: 45 x 1900 = 85500

Then lets plug 675 ml and 85500 into the equation above:

675 x C = 85500

C = 127 (3 s.f.)

7 0
3 years ago
Given the formula: what is a chemical name of this compound? propane propanal propanol propanone
katrin [286]
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7 0
3 years ago
Where is the ion charge located in the isotope symbol
Juliette [100K]
The ion charge located in the isotope symbol on the top right corner. <span>The number part of an </span>isotope's<span> name is the Mass Number (P + N). A negatively</span>charged ion<span> (anion) will have more Electrons than Protons. Cl 1- has one more electron than proton; 18 electrons, 17 protons. That's why its </span>charge<span> is 1-.</span>
3 0
3 years ago
Why is it necessary to use a new salt bridge for each<br> salt bridge for each electrochemical cell?
Irina-Kira [14]

Answer:

salt bridge balances the charge when electrons move from one half cell to another half cell.

Explanation:

Explanation: A salt bridge balances the charge when electrons move from one half cell to another half cell. During this process the salt bridge uses its electrolyte solution which further helps in balancing charges in both the half cells. ... Therefore, for each electrochemical cell a new salt bridge is used.

6 0
3 years ago
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Can somebody help me with this question please
Tasya [4]

Answer:

concave lens

Explanation:

it's concave lens because it diverges the ray/beam of light.

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3 years ago
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