100ml of a 04 moll acetic acid is mixed with 20ml of a 18
100ml of a 0.4 mol/L acetic acid is mixed with 20ml of a 1.8 mol/L NaOH. Calculate the pH of this buffer (pka acetic acid = 4.76)?
What is the pH of 100mL of a solution made using 5 mL of 1 M Na2HPO4 and 5mL of NaH2PO4?
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a 75 kg solid sphere with a 19 cm radius is suspended by a vertical wire attached to the ceiling of a room a torque of
element z has two natural isotopes z-79 78918 amu and z-81 80916 amu calculate the atomic mass of element z given the
a pendulum consists of a uniform disk with radius 10 cm and mass 400 g attached to a uniform rod with length 500 mm and
gas is confined in a tank at a pressure of 123 atm and a temperature of 295degc if two-thirds of the gas is withdrawn
100ml of a 04 moll acetic acid is mixed with 20ml of a 18 moll naoh calculate the ph of this buffer pka acetic acid
one mole of a dilute gas initially has a pressure equal to 100 atm and a volume equal to 260 l and an internal energy
a projectile is shot upward off a 475 m high cliff with a speed of 65ms at an angle of 48 with respect to the
a 50 w light bulb shines through two polarizers after having passed through the first polarizer the electric field
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