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(Solved): a. The mass of a sample measured by two technicues (A and \( 9 \mathrm{~F} \) is piotied in the bar ...




a. The mass of a sample measured by two technicues (A and \( 9 \mathrm{~F} \) is piotied in the bar gaph below. The two masse
a. The mass of a sample measured by two technicues (A and \( 9 \mathrm{~F} \) is piotied in the bar gaph below. The two masses are within 52 at each cher. We can condude that the masses reported by the two tediniques are not signifarby diferent. b. 1 mole of iron tumarate is rescted when 3 motw of hydrochicric aod (which relases protons in soluson) and 1 mole of hydrogen percode (as per the equation belowh. The limsting reagent is hydrogen perowde? c. The maximum permissibie concentabon of mercury in ariking water is \( 10 \mathrm{rat} \) A sample of water trom a lake has beenmessured to contan \( 98+02 \) nH dinking water. A two-kaied thest is appropnite to detemine f the wiser from the lade is sale to dinik a not d. A chemical sensor for contisol increases is fuorestence upcon tinding to cortisol in butter. However, in serum, contisol binds more sacrily to abumin because of which the fusescence of the chemical senser does not increase even in the presence of excess cortisol in serum. This is an exarpie of macracetect 6. You weighed out \( 10 \mathrm{mg} \) of NaCl and adsed \( 1 \mathrm{~mL} \) water to t uaing a pipete. Hosever, the pipetle was not calbrated, and the athal voume of water added was \( 1.05 \mathrm{~mL} \). You prepare severat dilutions of this solution. The enor in their concentrations is an example of random enor.


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a . Mass we get for technique A = 2 unit Mass we get form technique B = 1.8 unit The two technique has been sample only once. To calculate T -value that will determine whether they are significa
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