Answer:
When insulating materials rub against each other, they may become electrically charged . Electrons , which are negatively charged, may be 'rubbed off' one material and on to the other. The material that gains electrons becomes negatively charged
Explanation:
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Answer: B
Explanation:
There is an atom of one type of element and then two atoms of another type of element.
The spectrum goes as follows:
red, orange, yellow, green, blue, indigo and violet
Red has the lowest frequency.
Since frequency is inversely proportional to the wavelength, therefore, red has the longest wavelength.
Now, consider, the equation:
E = (hc) / lambda
Since the energy is inversely proportional to the wavelength, therefore, red will have the lowest energy.
Based on this, for the mentioned question:
1- Red has longer wavelength
2- Green has greater frequency
3- Green has greater energy
Answer:
pH = 7.14.
Explanation:
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In this case, since the pH of a solution is computed via the negative logarithm of the concentration of hydrogen ions:
Therefore, we plug in the given concentration to obtain:
Which is a nearly-neutral solution.