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adoni [48]
2 years ago
6

HELP PLS PLS PLS ILL MARK U BRAINLIEST!

Chemistry
1 answer:
MaRussiya [10]2 years ago
5 0

Answer:

2 NaI ---> 2 Na + I₂

Explanation:

The only way the reactant NaI can decompose is by separating into 2 atoms, Na and I. However, you must take into account that iodine (I) exists as a diatomic molecule.

An equation is balanced when there is an equal amount of each element on both sides of the reaction. These amounts can be modified by adding coefficients in from of the molecules/atoms.

The unbalanced equation:

NaI -----> Na + I₂

<u>Reactants</u>: 1 sodium, 1 iodine

<u>Products</u>: 1 sodium, 2 iodine

The balanced equation:

2 NaI ---> 2 Na + I₂

<u>Reactants</u>: 2 sodium, 2 iodine

<u>Products</u>: 2 sodium, 2 iodine

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Based on table N of the reference tables what is the number of hours required for 42k (potassium -42) to undergo three half-life
skelet666 [1.2K]

The number of hours required : 37.2 hours

<h3>Further explanation</h3>

Given

⁴²K (potassium -42)

Required

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Solution

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