Entries by Hannah Wangui

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August 20, 2019 in /by

This question was created from chem101midterm2  ATTACHMENT PREVIEW   Looking for a Similar Assignment? Order now and Get 10% Discount! Use Coupon Code “Newclient”

 

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If a saline solution is 0.450% sodium chloride by mass, what is the molarity of Na+ in the saline solution? I think you have to assume there are 100 g of solution, so that would give you 0.0045 g NaCl, but I am not sure how to continue.what is the molarity of Na+ in the saline solution? I think you have to assume there are 100 g of solution, so that would give you 0.0045 g NaCl, but I am not sure how to continue.

August 20, 2019 in /by

If a saline solution is 0.450% sodium chloride by mass, what is the molarity of Na+ in the saline solution? I think you have to assume there are 100 g of solution, so that would give you 0.0045 g NaCl, but I am not sure how to continue.   Looking for a Similar Assignment? Order […]

 

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Calculate the volume (in mL) of a 0.320 M KOH solution that should be added to 4.000 g of HEPES (MW=238.306 g/mol, pKa = 7.56) to give a pH of 7.7 of a 0.320 M KOH solution that should be added to 4.000 g of HEPES (MW=238.306 g/mol, pKa = 7.56) to give a pH of 7.7

August 20, 2019 in /by

Calculate the volume (in mL) of a 0.320 M KOH solution that should be added to 4.000 g of HEPES (MW=238.306 g/mol, pKa = 7.56) to give a pH of 7.7   Looking for a Similar Assignment? Order now and Get 10% Discount! Use Coupon Code “Newclient”

 

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A 80.0 mL stock solution contains 5.00 M BaCl2. When 25.0 mL of the stock solution is diluted to 75.0 mL, how many moles of Ba2+ ions will be contained in the dilute solution?

August 20, 2019 in /by

A 80.0 mL stock solution contains 5.00 M BaCl2. When 25.0 mL of the stock solution is diluted to 75.0 mL, how many moles of Ba2+ ions will be contained in the dilute solution?   Looking for a Similar Assignment? Order now and Get 10% Discount! Use Coupon Code “Newclient”

 

Looking for a Similar Assignment? Order now and Get 10% Discount! Use Coupon Code "Newclient"