Friday
December 19, 2014

Homework Help: Chem still confused

Posted by Jon on Monday, September 16, 2013 at 10:12am.

1.) A biochemistry student wants to make 4 liters of a phosphate solution using 48.6 g Na2HPO4 (FW=141.96) What is the concentration of this solution?

2. When she reaches the storeroom she finds that there is no Na2HPO4, however there is a bottle of hydrate Na2HPO4 * 7H20. (FW=268.07) how many grams of this salt should she use in order to make 4 liters with the same phosphate concentration as above?

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Chem wondering how to set it up - 1.) A biochemistry student wants to make 4 ...
Chemistry - How man moles of sodium phosphate are there in 0.4 liters of 0.1M ...
chem - 15.0 mL of 0.30 M sodium phosphate solution reacts with 20.0 mL of 0.22 M...
chemistry - Online chemistry lab preparing standards help? I was told to prepare...
Chemistry - Phosphate standards used to generate the calibration curve are ...
chem - A scientist wants to make a solution of potassium phosphate, K3PO4 for a ...
Chem - H. Using the technique outlined in this lab, a student decided to test ...
chemistry - Calculate the mass of salts needed for constructing a buffer using ...
chemistry - a ferric phosphate solution is prepared by adding 2.4 g of ferric ...
Chemistry ...ASAP please - a ferric phosphate solution is prepared by adding 2.4...

Search
Members