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You launch a ball straight up with an initial velocity of 17.56.2 m/s. On the way up it passes a tree branch at a height of m.
How much additional time will pass before the ball passes the tree branch on the way back down?
Calculate the pH of a buffer solution that contains 0.25 M benzoic acid (C6H5CO2H) and 0.15 M sodium benzoate (C6H5COONa). [Ka = 6.5 ? 10-5 for benzoic acid]
What is the pH of a buffer prepared by adding 180 mL of 0.100 M NaOH to 200 mL of 0.100 M acetic acid? (Ka for CH3COOH = 1.8 x 10-5)
Do all ionic compounds dissolve in water, Do all covalent compounds dissolve in water? answer should be 50 to 100 words.
Calculate the Pickering series wavelength associated with the excited state ni = 9.What region of the electromagnetic spectrum does this transition fall in?
What would be the expected effect on yield if only one mole of diethylamine per mole of alpha-chloro
Problem- An 66.39 g sample of aluminum is placed on a 42.56 g sample of copper initially at 124.96oC. If the heat is only transferred between the metals (with no loss to the surroundings) and the final temperature of both metals is 44.29oC, what i..
A solution of methylamine CH3NH2 has a pH of 10.64. How many grams of methylamine are there in 100.0 ml of solution
Explain what molar ratio of HPO4 2- to H2PO4 - in solution would produce a pH of 7.0? Phosphoric acid (H3PO4) a triprotonic acid has pKa values- 2.14, 6.86, and 12.4. Merely one of the pKa values is relevant here.
How does the Nervous system work with the respiratory system to restore the body to homeostasis during respiratory Alkalosis( Step by step explanation)?
Problem- For the hydrogen fuel battery, 2 H2 + O2 = 2 H2O, the standard potential at 293 K is 1.2335 V and at 303 K the potential is .2251 V. Calculate entropy, Gibbs energy, and nthalpy for this reaction.
If a 50.0 mL sample of ammonium hydroxide is titrated with 25.0 mL of 0.200 M nitric acid to a methyl red endpoint, what is the molarity of the base?
An ionic compound forms when aluminum (Z = 13) reacts with iodine (Z = 53). If a sample of the compound contains 1.23 x 1019 aluminum ions.
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