Can someone please help me i need to meet a deadline! 1.How many milliliters of

Question

Can someone please help me i need to meet a deadline! 1.How many milliliters of an 80% (v/v) solution of isopropylalcohol would you need to make 806 mL of a 10.2% (v/v) solution ofisopropyl alchohol? 2.Calculate the concentration of the solution formed when 151mL of 6.98 M HCL is diluted with 464 mL of water.

Can someone please help me i need to meet a deadline! 1.How many milliliters of an 80% (v/v) solution of isopropylalcohol would you need to make 806 mL of a 10.2% (v/v) solution ofisopropyl alchohol? 2.Calculate the concentration of the solution formed when 151mL of 6.98 M HCL is diluted with 464 mL of water.

Explanation / Answer

1. Assuming that it is a 10.2 M solution we require, C1 V1 = C2 V2 80 M * V1 = 10.2 M * 806 mL So volume required, V1 = 102.76 mL 2. Total volume = 151 + 464 = 615 mL 6.98 M * 151 mL = C2 * 615 mL So C2 = 1.71 M

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