Astudent conducted an experiment and was interested in the mass of the product of the chemical reaction. some results are shown above. what is the mass of the nacl?

NOTE: Above question is incomplete. Complete question is attached as an image file along with this question.
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The reaction involved in present question is:

NaHCO3(s) + HCl(aq)                 →           NaCl(s)     +    CO2(g)    + H2O(g)

From the above reaction, it can be seen that sodium bicarbonate on reacting with HCl gets converted into NaCl (s), CO2(g)  and H2O(g).

CO2(g)  and H2O(g) being gas will be lost from evaporating disk and watch glass, therefore there will be lost in mass.

Thus mass let in evaporating disk and watch glass will be only due to NaCl,
= 44.45 - 42.70 = 1.75 g

The correct answer is option B

The activity series is shown in the attached picture. if the element is below the other, then you can displace the other. following the activity series as a guide, the reactions are as follows: nickel and aluminum chloride3 ni + 2 alcl₃  → 3 nicl₂ + 2 albarium and copper bromideba + cubr  →  no reaction because cu is less oxidizable than bapotassium nitrate and aluminum3 kno₃ + al  → al(no₃)₃ + 3 ksodium phosphate and zincnaso₄ + zn  → znso₄ + na