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Q1. What are periods in periodic table?
Q2. How the atomic radii show variation across the period?
Q3. How the ionization energy varies in moving across the period from left to right?
Q4. How the electronegativity varies in moving across the period from left to right?
Q5. What are various blocks present in a periodic table?
Q6. What are 's' block elements?
Q7. What are 'p' block elements?
Q8. What are 'd' block elements?
Q9. What are 'f' block elements?
Q10. What is the position of metals and non metals in periodic table?
being used as a membrane to purify nitrogen. if the flux of nitrogen through the member is 8.2*10^-7 kg/m^2-s, what is the production rate of nitrogen in g/h?
Determine what is the mass percent yield from 2.57 grams of Sb in excess Sulphur , if 1.56 g of Sb 2 S 3 is obtained?
the reaction 2ararrbc has a kc of 0.2. the reaction is commenced with initial con- centrations a 0.2 m b 0.2 m and c
A sample of gas at 310 Kelvin and 1.2 atmospheres has a density of 2.78 g/L, what is the molar mass of this gas? Show all of the work used to solve this problem.
what mass of sucrose should be combined with 501 g of water to make a solution with an osmotic pressure of 8.85 atm at 305 K? (assume density of solution is equal to the density of the solvent).
You are to prepare a buffer at a pH of 9.00 using 0.50 mol/liter HCN and 0.36 mol/liter NaCN. If you begin with 250.0mL of 0.36 mol/liter NaCN, how many liters of the HCN solution must be added to the NaCN to prepare the buffer
Which of the following rtansitions in a hydrogen atom would emit radiation having the highest energy. A) n=1 to n=2 B) n=2 to n=6 C) n=6 to n=4 D) n=4 to n=1 E) n=3 to n=2 Please explain the answer to me as well.
a balloon filled with helium gas has a volume of 500ml at a pressure of 1 atm. the balloon is released and reaches an
When a monosaccharide reacts to give the pyranose form from its open-chain form, how many distinct pyranose forms are possible?
question pure benzene freezes at 5.50 degrees celsius. when 10.06 g c10h8naphthalene mm 128.16 gmol is added to 100.0
A solution of household bleach contains 5.25% sodium hypochlorite, NaOCl, by mass. Assuming that the density of bleach is the same as water, calculate the volume of household bleach that should be diluted with water to make 500.0 mL of a pH = 10.2..
If 28mL of 5.2M H2SO4 was spilled, what is the minimum mass of NaHCO3 that must be added to the spill to neutralize the acid?.
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