Chemistry, 06.10.2019 10:30, josiesolomonn1605
0.5109 g of pure mn powder was dissolved in 50 ml of nitric acid. this solution was quantitatively transferred to a 1 l volumetric flask and diluted to volume with di-water. next 30.00 ml solution was removed using a volumetric pipet and placed into a 100 ml beaker. 10 ml water, 5 ml of phosphoric acid, and 0.4 g of potassium periodate were then added. after the mn was oxidized to permanganate, the solution was quantitatively transferred to a 150 ml volumetric flask and diluted to volume with di-water. what is the concentration of this solution expressed in mg mn / 100 ml?
Answers: 3
Chemistry, 22.06.2019 03:10, josephpezza18
The covalent compound acetylene, which is the fuel of the oxyacetylene torch used by welders, has the molecular formula c2h2. the covalent compound benzene, a commercial solvent, has the molecular formula c6h6 each of these covalent compounds contains carbon and hydrogen atoms in a one-to-one ratio. would it be correct to write the chemical formulas of each as ch? explain.
Answers: 1
Chemistry, 22.06.2019 11:30, ansuaprajita1506
Voltaic cells produce a positive overall charge. what does this indicate? a. the reaction is likely to be endothermic. b. the reaction is spontaneous. c. the reaction is not likely to occur. d. the reaction is not spontaneous.
Answers: 3
Chemistry, 22.06.2019 16:00, matt16913
Which of the following is the correct definition of chemical energy? a. energy an object has because of its motion or position b. energy resulting from the flow of charged particles, such as electrons or ions c. energy produced from the splitting of atoms d. energy stored in chemical bonds of molecules
Answers: 1
Chemistry, 22.06.2019 19:00, Jasoncookies23
How does kepler second law of planetary motion overthrow one of the basic beliefs of classical astronomy
Answers: 1
0.5109 g of pure mn powder was dissolved in 50 ml of nitric acid. this solution was quantitatively t...
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