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Genrish500 [490]
3 years ago
10

How many moles are present in a 120.0g sample of calcium

Chemistry
2 answers:
MArishka [77]3 years ago
4 0
I THINK this is the answer: 4809.35999999786. (found it on a website)

Bad White [126]3 years ago
4 0
You have 120 grams and in one mol of Ca is 40.08 g of Ca (the mass of Calcium) so you divide 120/40.08 to get 2.991 moles of Ca

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djyliett [7]

13 An Ionic Bond

these are the characteristics of an ionic bond compounds like NaCl have these characteristics

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6 0
3 years ago
Which formula represents a molecular compound?<br> (1) Kr (3) N2O4<br> (2) LiOH (4) NaI
weeeeeb [17]
N2O4 is the only option from the list that represents a molecular compound, since compounds must contain at least two different atoms, although these can be from different groups. 
5 0
3 years ago
Read 2 more answers
Chromium occurs naturally as four isotopes: 50cr with a mass of 49.9460 amu, 52cr with a mass of 51.9405 amu, 53cr with a mass o
bearhunter [10]
Hello!

The most stable isotope of Chromium is ⁵²Cr with a mass of 51,9405 amu.

We know that because of the information that we can find in the periodic table. Which information is that? The atomic weight of the element. Atomic weights are calculated taking into account the relative abundances of each isotope of the element. The isotope that is the most abundant one will influence more the atomic weight that is found in the periodic table. 

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Have a nice day!
3 0
3 years ago
Which statement most accurately describes the behavior of a catalyst?
Elodia [21]
The a answer to the statement is between B and D
3 0
3 years ago
What is the mass of 3.0 x 10^23 atoms of neon
kari74 [83]
Molar mass neon = <span>20.1797 g/mol

20.1797 g ---------- 6.02x10</span>²³ atoms
         ? g ------------ 3.0 x 10²³ atoms

mass = 3.0 x 10²³ *  <span>20.1797 / 6.02 x 10</span>²³

mass = 6.054x10²⁴ / 6.02 x 10²³

mass = 10.05 g

hope this helps!
6 0
3 years ago
Read 2 more answers
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