3 years ago

Why is an electron ejected when green light hits the metal?

1 answer:

6 0

Explanation:

If a large photon strikes the surface, that has enough strength to take out an electrode, which will then travel to the positive side since it is negative. Current is flowing at this stage. Since the reduced photons will be unable to distinguish between atoms, no power can pass.

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yes

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I don’t know I’m just answering for points I don’t know 12

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What happens if you add a neutron to an atom?

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Answer:

if you add or subtract a neutron from an atom it will become a new isotopes of the same element

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32. List three examples of substances. Explain why each<br> is a substance. (3.1)

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Answer: Chemical X H3 and f1

Explanation:

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3 years ago

How many iron atoms are reactants in this equation? 4Fe+ 302

storchak [24]

Answer:

4 atoms of oxygen.

Explanation:

The given equation is :

$4Fe+3O_2\rightarrow 2Fe_2O_3$

Here Fe and O₂ are reactants and Fe₂O₃ is a product. It is a balanced chemical reaction in which the number of atoms on LHS are equal to number of atoms on RHS.

4 atoms of iron react with 3 atoms of oxygen to form iron oxide. Hence, there are 4 atoms of reactants in this equation.

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3 years ago