InstaIce, Inc suggests the following salts for their cold packs and has a quoted

ID: 487523 • Letter: I

Question

InstaIce, Inc suggests the following salts for their cold packs and has a quoted purchasing price per 500 g. To determine the most economical design, you need to: Determine the cost per gram of each salt in USD Determine the amount of salt (in grams): That will mix with 60.00 mL of deionized water Reduce temperature by delta T = -2 degree C Determine the total cost of each salt needed to create one cold pack, (use the amount of salt determined in step 2) Write a memo to InstaIce, Inc. describing the most economical design for a cold pack. Use data to support your design. The memo must include: Identification of salt Amount of salt, in grams, Total cost of the salt per cold pack in USD BRIEF comment on why this is the best choice BRIEF comment on reason(s) why each of the other salts Instalce, Inc. suggested was not selected.

Explanation / Answer

Hi,

Ans 1 ) as 500g costs $x
so 1g will cost $x/500

Salt

cost per 500g

cost per gram(cost per 500g/500)

ammonium chloride

$49.10

$0.0982

ammonium nitrate

$58.40

$0.1168

magnesium sulphate annhydrous

$70.00

$0.14

magnesium sulphate heptahydrate'

$81.90

$0.1638

sodium chloride

$37.10

$0.0742

Sodium bicarbonate

$40.10

$0.0802

sorry we are only allowed to answer one question at a time kindly repost the other questions seperately

Thank you