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Problem- Predict Zeff for the outermost electrons in the Rb atom based on the calculations for Na and K using Slater's rules.
Articulate your answer using two significant figures.
How to calculate the pH of 0.375 L of a 0.18 M acetic acid-0.29 M sodium acetate buffer before and after the addition of (a) 0.0060 mol of KOH and (b) 0.0060 mol of HBr.
Calculate the molecular weight of gas if 3.85 grams of it occupies 175 milliliters at 695 mmHg and 115 degree centigrade
Calculate the molar solubility of FeCO3 . How many grams of FeCO3 are present in 15.0 L of a saturated solution.
A flask of Argon gas is connected to the left arm of a manometer. The Hg level is 76.1cm. The right arm of the manometer is open to the atmosphere and has a Hg level of 63.9cm. The atmospheric pressure of the lab is 0.679 bar. What is the pressure..
Compare cross-sections of the direct ionization by electron impact computed using different modifications of the Thomson formula. Compute maximum values of the cross-sections as well as corresponding values of electron energy for each of the Thoms..
What is the freezing point of a solution containing 5.43 grams of butane (molar mass = 58.8 g/mole) dissolved in 50.0 grams of octane? The freezing point of pure octane is 25oC and the freezing point depression constant kfp is 3.42 oC/m.
Given the reaction: 2Al + 3H2SO4 -> 3H2 + Al2(SO4)3 what would be the total number of moles of H2SO4 needed to react completely with 5.0 moles of Al ?
Determine the mass of AgNO3 (MW = 170g/mol) required to dissolve in 400 mL solution in order to prepare a solution which is .14 M AgNO3.
Hydrofluric acid in an aq solution has a molar mass of 20.01g/mol. A chemist dissovles a .2001g sample in 20.0 mL and titrates it
ammonia is commonly made form n2 and h2 bythe haber process. because the reaction reaches equilibrium before going
How much heat is produced in burning 5 mol of C2H2 under standard conditions if both reactants and products are brought to 298 K
Your bedroom is 18ft long and 15 feet wide and the distance from floor to ceiling is 8ft 6 inches A) Find the rooms volume in cubic metersb) Find the mass of air in room in Kg (assume the density of air is 1.2g/l) and the room is empty
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