0.080504 cm ?
(2.290×10^6)÷(6.3×10^4)
I didn't really get what has been asked. If the you were asking to divide the answer is as follows. Please comment if you need something else.
Answer: 36.3492
If the K b of a weak base is 6.3 × 10 − 6 , what is the pH of a 0.28 M solution of this base?
6-Complete the table: PH РОН (H)* (ОНу 6.2 11.5 10-6.3 10-112
10. The bottom of a glass pan containing 6.3 kg of water is 1.4 cm thick and is resting on a hot stove. The area of the bottom of the pan is 1250 cm2. At the instant the water inside the pan is at 27°C, the rate of change of he temperature of the water is measured at 2.0 C° per minute. At this instant, what must be the temperature of the surface of the pan that is in contact...
Given that K, for HF is 6.3 x 10-4 at 25 °C, what is the value of Ky for Fat 25 °C? Given that Kt, for (CH), N is 6.3 x 10- at 25 °C, what is the value of K, for (CH), NH+ at 25 °C? Ka =
Given that Ka for HF is 6.3 × 10-4 at 25 °C, what is the value of Kb for F– at 25 °C? Given that Kb for CH3NH2 is 5.0 × 10-4 at 25 °C, what is the value of Ka for CH3NH3 at 25 °C?
A charge, q1, of +11 micro-coulombs is located at x = 0, y = 6.3 cm, a charge q2 of -45 micro-coulombs is located at x = 0, y = -3.6 cm, an unknown charge of q3, is located at x =- 4.5 cm, y = 0 cm, and a charge, q4, -6 micro-coulombs is located at x = +10.6 cm, y = 0 cm. The direction of the total electric force on q4 is 130.2 degrees from the +x...
an object is placed 6.3 cm in front of a concave mirror. The magnification is 2.5. if a real image is produced, what is the radius of curvature of the mirror?
For a disk of radius R = 17 cm and Q = 4 ✕ 10-6 C, calculate the
electric field 4 cm from the center of the disk using all three
formulas below. Note: ε0 = 8.85e-12 C2/(N·M2).
For a disk of radius R 17 cm and Q 4 x 10 6 C, calculate the electric field 4 cm from the center of the disk using all three formulas below. Note: Eo 8.85e-12 C2 (N.M2). Q/A (a) Most accurate approximation:...
Calculate the [OH-] in each of the following solutions: (a) [H+] = 6.3 × 10-4 [OH-] = × 10 (b) [H+] = 2.7 × 10-8 [OH-] = × 10 (c) 1.14 M KOH [OH-] = M The number of significant digits is set to 3; the tolerance is +/-0% (d) 0.68M HC2H3O2 (Ka = 1.8 × 10-5) [OH-] = × 10 M
Pyridine, C5H5N, is a weak base; its conjugate acid has Ka = 6.3 × 10-6. A 0.5-M solution of pyridine has a pH of 9.4. Calculate the concentration of the unreacted pyridine in this solution. [C5H5N(aq)] = M