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Alborosie
3 years ago
15

I need help I have to pass to graduate

Chemistry
1 answer:
andreev551 [17]3 years ago
5 0
I don’t know off the top of my head but just look at a periodic table (most elements are metal anyway)
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3 years ago
Read 2 more answers
How many atoms are in 578g Na
borishaifa [10]

1.51 x 10²⁵atoms

Explanation:

Given parameters:

Mass of Na = 578g

Unknown:

Number of atoms = ?

Solution:

 To find the number of atoms, we must first find the number of moles the given mass contains.

  Number of moles  = \frac{mass}{molar mass}

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 Number of moles =  \frac{578}{23} =  25.13moles

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5 0
3 years ago
What volume will 20.0g of Argon occupy at STP?
Yuki888 [10]
Molar mass Argon = 39.948 g/mol

1 mol ------ 39.948 g
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hope this helps!
6 0
3 years ago
How many moles in 30.0 grams of h3po4
jok3333 [9.3K]
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= 0.306 moles

hope this helps!


5 0
3 years ago
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