Can someone help me with my chemistry
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Can someone help me with my chemistry

[From: ] [author: ] [Date: 12-06-25] [Hit: ]
20.The electron configuration of nitrogen is 1s2 2s2 2p3. How many more electrons does nitrogen need to satisfy the octet rule?-15.1 g nacl x 1 mole/ 58.44g nacl = 0.......
15. How many milliliters of a 0.171 M solution contain 1.00 g of NaCl? (molar mass of NaCl = 58.44 g/mol)

20. The electron configuration of nitrogen is 1s2 2s2 2p3. How many more electrons does nitrogen need to satisfy the octet rule?

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15. is a molarity problem where M = mole/liter

1 g nacl x 1 mole/ 58.44g nacl = 0.017mol nacl

then we solve for volume where

0.017 mol nacl / 0.171M nacl = 0.1 L

0.1 L x 1000 ml / 1 L = 100ml





20. it needs 5. why? 8 - 3 from 2p3 = 5.
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