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Every precipitate will be collected using a Hirsch funnel. Make definite that the plastic frit disc is firmly snapped in place in your focus. Replacement frit discs are available in case it become clogged or otherwise broken. Attach the funnel to a filter flask, using the neoprene adapter to ensure a good seal among the funnel and the flask. Attach the filter flask to your vacuum line and turn the vacuum on. Swirl the precipitate in solution and quickly pour the mixture onto the filter (while the solids are still suspended). Rinse the precipitate with a minimal amount of ice-cold water. Leave the space on until the precipitate is dry (~5 min.), and take note of the mass.
In Bohr's model, atomic radius of the first orbit is γ the radius of the 3rd orbit, is: (1) γ/ 3 (2)γ (3) 3γ (4) 9γ Ans: 9γ
Explain construction & working of calomel electrode.
Visualisation of hybrid orbitals
Q. What is trial and error method? Trial and error method is the simplest methodology in product development. Only one ingredient in the formulation is changed at a time and it
electronic vinyas of led
What are ferrites? Ferrites are ceramic compounds containing trivalent metal having three valence electrons, iron and oxide of divalent element i.e. metals having two free ele
Artificial process for manufacture of Petrol or gasoline (a) Cracking, (b) Synthesis
Q. Show General Characteristics of group16? The valence shell electronic configuration of Group 16 elements is ns 2 , ns 4 . These elements tend to gain inert gas configuration
Classify each reaction and give the name of all the chemical formula involved for each number. 1. Na2CO3(s) + SiO2(s) ? Na2SiO3(l) + CO2(g) 2. 2 Mg(NO3)2(s) ? 2 Mg(NO2)2(s) + O2
Q. What are the De Broglies waves? Bohr anticipated that hydrogen's single electron could orbit at only specific distances from the atom's nucleus. When the electron is in the
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