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A valid Lewis structure of __________ cannot be drawn without the central atom violating the octet rule.
the ferrous ion fe2aq reacts with the permanganate ion mno4- aq in an acidic solution to produce the ferric ion fe3aq.
A two-component mixture is analyzed by gas chromatography with flame ionization detection. compound x has a retention time of tr= 11.53 min with N= 16,520 theoretical plates
In the ultramicro-boiling point determination, why is the b.p take just as bubble cease from the bell. what is inside these bubbles
Calculate the amount of heat, in kJ, needed to convert 15.0 g of ice at -21 C to liquid water at 75 C. Specific heat of ice = 2.10 J/(g C); heat of fusion of ice = 334 J/g; Specific heat of water = 4.18 J/(g C)
Draw a representation of the 3-D structure of the anion, including only the bonding-pair electrons, and any sulfur lone-pair electrons. What is the orientation of the oxygen atoms with respect to each other around the S?S bond?
Draw the molecule by placing atoms on the grid and connecting them with bonds. You do not need to show hydrogen atoms connected to carbon atoms.
One beaker contains 50.0 mL g of water at 22ºC, and a second beaker contains 75 mL of water at 53ºC, The water in the two beakers is mixed. What is the water final temperature. Assume water has a density of 1.0g / mL and specific heat capacity for..
Explain solids, liquids and gases in terms of how they fill a container, Utilize your descriptions to identify the physical state at room temperature of the subsequent 1.helium in a toy balloon. 2. Mercury in a thermometer. 3. Soup in a bowl
The 2D model can encompass degenerate energy levels. For various combinations of the n(x) and n(y), compute the energies of the eleven lowest energy levels which will accommodate the 22π electrons.
A 50.0 mL sample of 0.155 M HNO2(aq) is titrated with 0.100 M NaOH(aq). What is the pH of a solution after the addition of 25.0 mL of NaOH. (Ka of HNO2 = 4.5 ´ 10-4)
How many grams of solid calcium hydroxide Ca(OH)2 are required to prepare 200 mL of a 0.05 M solution. Molar mass (formula weight) of Ca = 40.1 g/mol, O = 16.0 g/mol, and H = 1.01 g/mol.
consider the titration of 50.0ml of 0.217 m hydrazoic acid hn3 ka2.6 x 10-5 with 0.183 m naoh.nbsp calculate the ph of
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