please i need the answer within five minutes

Chemistry
Tutor: None Selected Time limit: 1 Day

Calculate the mass of solute in the following K3PO4 solution: 2.63×10-1 L of a 1.35×10-3-M solution.

Calculate the volume of 2.59×10-3-M NaClO4 solution needed to provide 8.47×10-2 g of NaClO4.

Dec 9th, 2014

Calculate the mass of solute in the following K3PO4 solution: 2.63×10-1 L of a 1.35×10-3-M solution.

Calculate the mole of K3P04

MW of K3PO4 = 211.9 g/mol

2.63x10^-1 X 1.35x10^-3 = 3.55x 10^-4 mole 

3.55x 10^-4  mole x MW ( 211.9 g/mole) = 

mass of K3PO4 = 0.075 g

Calculate the volume of 2.59×10-3-M NaClO4 solution needed to provide 8.47×10-2 g of NaClO4.

MW of NAClO4 = 122.44 g/mol

2.59x 10^-3 mole/L X 122.44 g/mol = 0.317 g/L

Vol needed to make .0847 g NaClO4 = 0.317 g/ 1L X = 0.847 g

Multiply both sides by 1L =  1L X 0.317 g/ 1L X = 0.847 g X 1L

Divide boths sides  by 0.317 g:   0.317 g /0.317 g X = 0.847 g 1L/0.317g

X = 2.71 L



Dec 9th, 2014

Studypool's Notebank makes it easy to buy and sell old notes, study guides, reviews, etc.
Click to visit
The Notebank
...
Dec 9th, 2014
...
Dec 9th, 2014
Dec 4th, 2016
check_circle
Mark as Final Answer
check_circle
Unmark as Final Answer
check_circle
Final Answer

Secure Information

Content will be erased after question is completed.

check_circle
Final Answer