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?
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.
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.