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Ann [662]
3 years ago
6

What is the molar mass of Na2Cr2O7?

Chemistry
1 answer:
iren2701 [21]3 years ago
6 0
The answer should be 261.97 g/mol
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How many orbitals surround the nucleus in a neutral atom of sulfur (S)?
Leto [7]
<h2>C</h2>

Explanation:

The atomic number of S is 16

So,number of electrons in S is 16

The electronic configuration of S is 2,8,6

The orbital electronic configuration of S is ^{1}s_{2}^\text{ }^{2}s_{2}^\text{ }^{2}p_{x2}^\text{ }^{2}p_{y2}^\text{ }^{2}p_{z2}^\text{ }^{3}s_{2}^\text{ }^{3}p_{x2}^\text{ }^{3}p_{y1}^\text{ }^{3}p_{z1}^\text{ }

So,the number of orbitals involved is 9.

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3 years ago
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harina [27]
Mg+Cl2--> MgCl2

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bija089 [108]

Answer:

4

Explanation:

your chosen answer is right as unsaturated mean contains double bond and 1st and 3rd is Wrong as Carbon only can have 4 bonds and 2nd is Wrong as it is saturated.

hope this helps :)

5 0
2 years ago
Plz Help!! 20 points!!
Sophie [7]
The drawing is correct because there are 12 atoms of each type on each side of the arrow.

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