How many percent of impurities the metal contain

Reference no: EM13170671

1)The basicity constant of ammonia is K= 1.8&10^-5. What is the molar concentration of ammonia if the concentration of OH- ions is 1.5*10^-3?

2)The solubility of Mg(OH)2, Ksp = 8.9 * 10^-12, in 1 L of a solution buffered (with large capacity)at pH 12 is?

3)48.61 g of magnesium was dissolved in diluted sulfuric acid and 490 g of MgSO4 . 7H2O was isolated from the solution. How many percent of impurities (if any) did the metal contain?

4)A 0.12 M solution of a weak base is 1 % dissociated. Calculate Kb.

Reference no: EM13170671

Questions Cloud

Legacy system with an ehr-based solution : A local company is going to replace its legacy system with an eHR-based solution to improve recruiting and hiring efforts, both internally and externally.

What is the formula of the zinc sulfate hydrate : a 1.150g of the hydrated salt ZnSO4. XH2O is dissolved in water and the sulfate ion is precipitated by adding an excess of BaCl2 solution. The mass of Pure and Dry BaSO4 precipitated obtained is 0.9335g. What is the formula of the zinc sulfate hyd..

What is the coordination number of complexes : What is the coordination number for each of the following complexes? A. [Co(NH3)4(H2O)2]^3+ B. [Cr(EDTA)]^-

Food supply : What would be three policies that you would make universal to ensure that everyone felt good about the food supply and that everyone had the same understanding of what they were purchasing?

How many percent of impurities the metal contain : 48.61 g of magnesium was dissolved in diluted sulfuric acid and 490 g of MgSO4 . 7H2O was isolated from the solution. How many percent of impurities (if any) did the metal contain?

Explain the weight percent of sulfuric acid in solution : If the density of sulfuric acid is 1.05 g/ml in the original 1 L solution, then find the weight percent of sulfuric acid in solution.

Tration curve for triprotic acid and a mixture : What significant difference would be expected between a titration curve for H3PO4 (triprotic acid) and a mixture

Draw the lewis structure of benzoic acid : Draw the Lewis structure of benzoic acid a (refer to p.40 in you lab manual). ii). list all the IMF that exist between two molecules of benzoic acid.

What is the mass of the steel bar : 85.0 of is initially at room temperature (22). A chilled steel rod at 2 is placed in the water. If the final temperature of the system is 21.2, what is the mass of the steel bar?

User Account

All Pages