Answered

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Sagot :

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Answer:

2.2 moles

Explanation:

n = CV

n = 0.4×5.50

n=2.2 moles

Answer:

Explanation:

#2 is answered so here is for #3:

Knowns: 100mL of solution; concentration of 0.7M

Unknown: number of moles

Equation: number of moles = volume * concentration

Plug and Chug: number of moles = 100/1000 * 0.7 = 0.07 mole

Final Answer: 0.07mole

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