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A 9.0 ohm and a 6.0 ohm resistor are connected in a series to a 12V battery. (a) What is the current on the circuit? (b) What is the voltage drop across each resistor? (c) What is the power dissipated by each resistor?
Assume 1.00 mL = 1.00 g What numerical value will be used for the moles on the right hand side of the equation above?
(1)Write a thoughtful paper that compares how chemists of the early 20th century helped shape social policy and what their challenge is for the present and the future of life on this habitable planet.
Enter the data into a spreadsheet. and construct a standard-additions plot of the data.
Under what conditions can you ensure that substitution will predominate and under what conditions can you ensure that elimination will predominate?
Phosphorous acid, H3PO3(aq), is a diprotic oxyacid that is an important compound in industry and agriculture. Calculate the pH for each of the following points in the titration of 50.0 mL of a 2.7 M H3PO3(aq) with 2.7 M KOH(aq).
Oxalic acid is a diprotic acid that occurs naturally in some plants. Calculate the pH and the concentrations of all species present in a 0.72-M solution
An uncovered cup (1/2 pint) of trichloroethane (d=1.325 g/mL) is kept in an 18-ft3 refrigerator at 39 F. What percentage (by mass) of trichloroethane is left as a liquid when equilibrium is established
watch for stereochemical implications. doing the mechanisms would be good practice too. question application of
Magnesium oxide (MgO) forms when the metal burns in air. (a) If 1.25 g of MgO contains 0.754 g of Mg, what is the mass ratio of magnesium to oxide
Question- Calculate the equilibrium pH using BOTH the equilibrium approach and Henderson Hasselbalch equation approach for an acetate buffer solution that consists of 0.10M acetic acid (CH3COOH) and 0.15M sodium acetate (CH3COONa).
double bond energy= 837 h single bond cl = 431 C single bond C = 347 C single bond H = 414 C single bond Cl 339 It says answer is -154 kJ but im not getting that
what is the hybridization of phosphorus in the phosphonium ion (PH4+)
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