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dmitriy555 [2]
4 years ago
15

What element has a proton number of 79?​

Chemistry
2 answers:
Lilit [14]4 years ago
6 0
Gold. Hope this helps…
PtichkaEL [24]4 years ago
3 0
Gold has 79 protons on the periodic table
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A process stream contains 450 mol/s benzene and 375 mol/s toluene. Calculate the mole fraction of benzene in the process stream.
Tema [17]

Answer:

0.5455

Explanation:

The moles of benzene in the process stream in 1 sec = 450 moles

The moles of toluene in the process stream in 1 sec = 375 moles

So, according to definition of mole fraction:

Mole\ fraction\ of\ benzene=\frac {n_{benzene}}{n_{benzene}+n_{toluene}}

Applying values as:

Mole\ fraction\ of\ benzene=\frac {450}{450+375}

<u>Mole fraction of benzene in the process stream = 0.5455</u>

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4 years ago
The formula for a chemical reaction is given. 2Na + 2H2O → 2NaOH + H2 Which of the following describes this reaction? Group of a
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A liquid has a volume of 34.6ml and a mass of 46g. what is the density
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Which period is older than the Triassic period? Cambrian Cretaceous Jurassic Paleogene.
scoundrel [369]

The Triassic period is one of the geological periods and is the shortest of the Mesozoic era. Cambrian is the older era than the Triassic period.

<h3>What is Cambrian and triassic period?</h3>

The Triassic period existed 250 -200 million years ago and started after the vastest and most extreme devastation ever. It is the 1st period of the Mesozoic and is known for the movement of the Dinosaurs on the land, flying pterosaurs and swimming plesiosaurs and ichthyosaurs.

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Learn more about Cambrian and Triassic periods here:

brainly.com/question/11417834

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