You ground your vitamin c tablet and dissolved the ground powder in 250. ml of water in a volumetric flask. the mass of the tablet was 1.0050 grams. the mass of the powder transferred into the volumetric flask was only 0.9875 grams. you used a 25.0 ml aliquot of this solution for your titration. if it takes 9.75 milliliters of your 0.0149m titrant, how many grams of ascorbic acid (mw 176.12) were in the original tablet? [enter the number as a decimal - do not use scientific notation. you must include leading zeros. do not include units.]

0.2558 g

Explanation:

1.- In titration, since you have the concentration and the volume of the titrant and the aliquot that you take, you can use the formula C1 V1 = C2 V2.

2.- To obtain C2 = C1 V1  /V2

    Substitution C2 = (0.0149 M ) (9.75 ml) /25 ml = 0.0058 11 M

3.- This concentration is the number of moles that you would have in 1 L but you dissolve your tablet in 250 ml, so a rule of three.

4.- 0.005811 moles - 1 L

                     x        - 0.250 L

X= 0.250 L x 0.005811 moles / 1L = 0.00145275 moles

5.- using your molecular weight, you can obtain the grams with another rule of three.

0.00145275 moles -  x

                  1 mole - 176.12 g

x= 176.12 g  x 0.00145275 moles / 1 mole = 0.2558 g

Hope this was useful

answer: every other day

explanation: because you don't want to over work your body and especially if your just starting to work out.

answer:

to with mild choking in an adult or child over 1 year old: encourage them to keep coughing to try to clear the blockage. ask them to try to spit out the object if it's in their mouth. don't put your fingers in their mouth to them as they may bite you accidentally.

explanation: