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Problem- 1) Draw the Lewis structure of H2O. Include any nonbonding electron pairs.
Draw the molecule by placing atoms on the grid and connecting them with bonds. Include all lone pairs of electrons.
I did it however have somewhere a mistake and don't know where
What is the precipitate that forms when aqueous ammonium sulfide reacts with aqueous copper (II) nitrate
Calculate the freezing point of the following solutions, assuming complete dissociation. Part A= 0.114mK2S Part B=20.5g of CuCl2 in 401g water Part C=6.5% NaNO3 by mass
A sample of compact bone has a mass of 5.80 g and a volume of 3.00 cm3. What is the density of the sample?
Calculate the number of moles of sodium hydroxide used in the titration. b. How many equivalents of unknown acid were titrated? c. Determine the equivalent mass of the unknown acid
What is the pH of a 0.75 M NaOH solution at 60°C. The equilibrium constant Kw for water at 60°C (333 K) is 9.60 x 10E-14.
Determine the concentrations of the following ionic species present in a 0.333 M solution of the diprotic acid H2SO3. For H2SO3, Ka1 = 1.4E-2, Ka2 = 6.3E-8.
What is the de Broglie wavelength in cm, of a 12.7 g hummingbird flying at 1.15 multiplied by 102 mph (1 mile = 1.61 km.)
A sample of chlorine gas occupies 825 mL at 1250 torr. What volume will the chlorine occupy at 3.50 atm
reaction between copper and silver nitrate2agno3 cu 2ag cuno32beaker-66.88gcopper- 7.44gsilver nitrate- 1.60gwater
How many grams of KOH are required to neutralized 300ml of 5.0 N HN03 solution.
Ignoring activities find out the molar solubility of copper (I) aside (CuN3) in a solution with a pH of 12.04. Ksp (CuN3) = 4.9 × 10-9; Ka (HN3) = 2.2 × 10-5.
Determine steady-state conditions for one dimensional conduction in a plane wall having a thermal conductivity of 50 W/mK as well as a thickness L=0.25m from T1 = 50ºC to T2 = -20ºC. Find out the head flux.
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