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nignag [31]
3 years ago
7

An atom has atomic number 5 and mass number 11. How many protons does the atom have

Chemistry
1 answer:
yan [13]3 years ago
5 0

Answer:

5

Explanation:

The amount of protons is equal to the atomic number.

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I WIll upvote for answer<br> Balance the following reaction Fe^2 O ^3 +HCI+FeCI^3+H^2O
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Let's balance step by step. We'll start with Iron (Fe)
Fe2O3 + HCl --> FeCl3 + H2O
We have 2 Fe on the left, and only one on the right, so we'll double the Fe on the right
Fe2O3 + HCl --> 2FeCl3 + H2O
Now we have six Cl on the right, and only one on the left, so we'll multiply the Cl by six on the left
Fe2O3 + 6HCl --> 2FeCl3 + H2O
Finally, we can balance the water, as we have 6 H and 3 O on the left, and 2 H and one O on the right, so we can triple the H2O on the right
Fe2O3 + 6HCl --> 2FeCl3 + 3H2O
The equation has been balanced.
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