8.769 of impure sample containing H2C2O4(s) was dissolved completely in 250 cm3 of distilled
water to form a solution . 25.0cm3 of this
Solution was pipetted out in a conical flask
and titrated with 0.0650 moldm^-3 acidified
K2Cr2O7(aq). 31.80 cm ^3 of K2Cr2O7(aq) was
used . Calculate the percentage purity of
the sample.

The wilson chamber is used to study: direction, speed, and distance of radioactivity the intensity of radiation the appearance of individual atoms all of the above

In water, a strong acid will break down into its component parts. a. completely b. partly c. never in water, a weak base will break down into its component parts. a. completely b. partly c. never

Acalorimeter is to be calibrated: 51.203 g of water at 55.2 degree c is added to a calorimeter containing 49.783 g of water at 23.5c. after stirring and waiting for the system to equilibrate, the final temperature reached is 37.6 degree c. specific heat capacity of water (s = 4.18 j/g∙degree c). calculate the calorimeter constant. (smδt)warm water = -[(smδt)cold water + (calorimeterδtcold water)]