A student dissolved 5.00 g of Co(NO3)2 in enough water to make 100. mL of stock solution. He took 4.00 mL of the stock solution and then diluted it with water to give 275. mL of a final solution. How many grams of NO3- ion are there in the final solution? A) 0.0 247 g B) 0.0 493 g C) 0.0 678 g D) 0. 136 g E. 0.475 g 4

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A student dissolved 5.00 g of Co(NO3)2 in enough water to make 100. mL of stock solution. He took 4.00
mL of the stock solution and then diluted it with water to give 275. mL of a final solution. How many
grams of NO3- ion are there in the final solution?
A) 0.0 247 g
B) 0.0 493 g
C) 0.0 678 g
D) 0. 136 g
E. 0.475 g
4
Transcribed Image Text:A student dissolved 5.00 g of Co(NO3)2 in enough water to make 100. mL of stock solution. He took 4.00 mL of the stock solution and then diluted it with water to give 275. mL of a final solution. How many grams of NO3- ion are there in the final solution? A) 0.0 247 g B) 0.0 493 g C) 0.0 678 g D) 0. 136 g E. 0.475 g 4
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