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3241004551 [841]
3 years ago
5

How long is 5 half lives if the half life is 2.6 hours? Remember to round to the correct number of significant figures and use u

nits ( hours)
Chemistry
1 answer:
Dmitry [639]3 years ago
3 0

Answer:

\Delta t = 13\,h

Explanation:

Half time is period required to desintegrating the half of the initial number of atoms. Then, the total time is:

\Delta t = 5\cdot (2.6\,h)

\Delta t = 13\,h

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Bismuth oxide reacts with carbon to form bismuth metal: bi2o3(s) + 3c(s) → 2bi(s) + 3co(g) when 689 g of bi2o3 reacts with exces
ExtremeBDS [4]
Using the answer from the first part, we know that 2.957 moles of bismuth have formed. Moreover, the molar ratio between bismuth and carbon monoxide is:

2 : 3

Using the method of ratios,

2 : 3
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CO = (3 * 2.957) / 2
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8 0
3 years ago
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A student has an unknown sample. How can spectroscopy be used to identify the sample?
iogann1982 [59]

Answer: A. It can identify the elements in the sample.

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4 0
4 years ago
HELPP PLEASEEE I REALLY NEED IT!!!!!!!!
SSSSS [86.1K]
Answer:

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8 0
3 years ago
How many Hydrogen atoms are in 4HN₃?
Kazeer [188]
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6 0
2 years ago
I wrote that all matter consists of tiny particles called atoms. I also thought all atoms of a specific
Westkost [7]

Answer:

John Dalton

Explanation:

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He postulated the Dalton's atomic theory which has the following important parts;

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