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Q1. What are metals?
Q2. What are non metals?
Q3. What are metalloids?
Q4. Explain the reactivity of metals in their respective groups.
Q5. How the non metals are subdivided based on their reactivity in periodic table?
Q6. Explain the amphoteric nature of Beryllium based on its properties.
Q7. Explain the amphoteric nature of Radon based on its properties.
Q8. What is Madelung Rule or energy ordering rule for filling of electrons in their subshells?
Q9. Give the diagram for Madelung Rule.
Q10. What is the electronic configuration of Neon with atomic number 10.
What is the molecular formula of the molecule that had an empiricial formula of C2 H4 S and a molar mass of 180.35% g/molecular.
Write the chemical reaction equation and equalibrium solubility product constant expression associated with the solubility of Ag2CrO4
A large gas flask is found to weigh 143.567 g. it is then filled with gas to a pressure of 735 torr at 31 C and found to weigh 1067.9 g (the density of water is 31 C is 0.997 g/mL). Assuming that the ideal gas equation applies, calculate the molar..
What is a chemical shift in NMR spectroscopy and discuss Gabriel Synthesis with examples.
A green leaf has a surface area of 2.10 cm^2. If solar radiation is 1150 W/m^2, how many photons strike the leaf every second? Assume three significant figures and an average wavelength of 504 nm for solar radiation.
Dolomite is a mineral consisting of calcium carbonate (CaCO3) and magnesium carbonate (MgCO3). When dolomite is strongly heated, its carbonates decompose to their oxides (CaO and MgO) and carbon dioxide is expelled.
explain the following statement: A catalyst provides an additional reaction pathway with an increased overall reaction rate. It is an active participant in the chemical reaction but is not consumed by it.
Assume that you have carried out a radical chlorination reaction on (R)-2- chloropentane and have isolated (in low yield) 2,4-dichloropentane.
What mass of this compound must be added to 1 kg of water to form a mixture above which the vapor pressure (equilibrium partial pressure) of this fragrance is 2 Torr
In calibrating a drop counter, a student had an initial buret reading of 0.41 mL and a final buret reading of 4.71 mL after dispensing 75 drops from a buret.
How many seconds after the start of the reaction does it take for the reactant concentration to decrease to 0.0131 M?
for the reaction n2g 2 o2g 2 no2g kc 8.3 times 10-10 at 25degc. what is the concentration of n2 gas at equilibrium
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