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Kazeer [188]
3 years ago
6

Due today please help

Chemistry
1 answer:
77julia77 [94]3 years ago
5 0

Answer:

The answer: is D. there are more daughter nuclei than parent nuclei in a sample.

Hope this help you enjoy :D

Explanation:

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4. Given the balanced equation: 2Na + S → Na₂S
PtichkaEL [24]

Answer:

Option D. 30 g

Explanation:

The balanced equation for the reaction is given below:

2Na + S —> Na₂S

Next, we shall determine the masses of Na and S that reacted from the balanced equation. This is can be obtained as:

Molar mass of Na = 23 g/mol

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SUMMARY:

From the balanced equation above,

46 g of Na reacted with 32 g of S.

Finally, we shall determine the mass sulphur, S needed to react with 43 g of sodium, Na. This can be obtained as follow:

From the balanced equation above,

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Therefore, 43 g of Na will react with = (43 × 32)/46 = 30 g of S.

Thus, 30 g of S is needed for the reaction.

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Which of the following is not a clue that a chemical reaction has taken place? *
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