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Alinara [238K]
3 years ago
8

What percentage of radium 288 is left after 1600 years ? ( figure out the number of half-lives,then look at the chart above to f

igure out the % remaining)
Chemistry
1 answer:
erastovalidia [21]3 years ago
5 0

Answer:

Find it ur self lol

Explanation:

lol just look it up

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The pond weeds are the producers because they are a plant
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Why would an increase in temperatures be detrimental to the tundra? Select all that apply.
ludmilkaskok [199]

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I think the answers are... b, d, and maybe a. I don't know for sure. So only put these answers in if you trust me!

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3 0
2 years ago
How many moles of propane<br> react when 294 g of CO2 form?<br><br> C3H8 +502 → 3CO₂ + 4H₂O
tatiyna

2.23 moles of propane react when 294 g of CO₂ is formed .

<h3>What is moles ?</h3>

Moles is a unit which is equal to the molar mass of an element.

A reaction is given

C₃H₈ +50₂ → 3CO₂ + 4H₂O

Grams of CO₂ formed = 294 gm

In moles = 294 /44 = 6.68 moles.

Let x be the moles of C₃H₈ is x

Mole ratio of CO₂ to C₃H₈ = 3 : 1

so

6.68 /x = 3/1

x = 6.68 /3 = 2.23 moles

Therefore 2.23 moles of propane react when 294 g of CO₂ is formed .

To know more about Moles

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7 0
2 years ago
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sertanlavr [38]

Answer:

Ca

Explanation:

It is on the left side of the periodic table where metals are located.

4 0
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