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the sma compont of an element that cannot be sub-divided and still retain the chemical properiets of that element is
5000 ml of 0170m naoh is added to 585 ml of 0200 m weak acid ka26610-5 what is the ph of the resulting buffer haaq
calculate the change in ph when 800 ml of 100 m hclaq is added to 1000 ml of a buffer solution that is 0100m in nh3aq
a 150 kg box is pushed up an 800 m long frictionless incline inclined at an angle of 300 degrees above the horizontal
a solenoid of length 63 cm and diameter 088 cm is wound with 178 turns per cm the current is decreasing at a rate of
a tlc plate showed two spots with rf values of 025 and 026 the plate was removed from the developing chamber the
draw andor describe everything that can assumedknown about the below peaks eg its a -ch2- attached to either a cc or co
write the expression for the equilibrium constant kc for the following thermal decomposition reaction be sure to
two beakers one containing 0010 m naclaq and the other containing 0010 m alcl3aq are placed inside a bell jar and
1 what is the definition of a strong acid compared to that of a weak acid2 is it possible to have a ph for a weak acid
a bicycle whose tires have a diameter of 700 m accelerates from rest at a constant rate traveling a distance of 156 m
consider a different reaction from the one conducted in lab when nitrogen gas n2 reacts with oxygen gas o2 the result
1 will a double replacement reaction occur if a potassium hydroxide solution is mixed with a leadii nitrate solution
the resonant frequency of an rcl circuit is 10 khz and the value of the inductance is 70 mh what is the resonant
the power dissipated in a series rcl circuit is 563 w and the current is 0273 a the circuit is at resonance determine
an ac generator has a frequency of 90 khz and a voltage of 25 v when an inductor is connected between the terminals of
compare the temperature change as a pure liquid is converter to a solid at its freezing point with the temperature
1 write a total ionic equation for the reaction if any of fecl2 solution with cu and for the reaction if any of fecl2
a spring-loaded catapult has a spring with spring constant 500 nm when loaded the spring is compressed a distance of
a certain type of laser emits light that has a frequency of 60 times 1014 hz the light however occurs as a series of
if caffeine is soluble in methanol as well as methylene chloride then why couldnt i use methanol to extract caffeine
an airplane is flying due north at 180 ms the earths magnetic field has a northward component of 03 mt and an upward
calculate w in kj when 557 g iron iii oxide mm 1597 gmol reacts with excess carbon to produce carbon dioxide gas at
on a cloudless day the sunlight that reaches the surface of the earth has an intensity of about 15 times 103 wm2 what
a magnetic field is perpendicular to the plane of a single-turn circular coil the magnitude of the field is changing so