Question

based on the results you obtained in the lab today, calculate the percentage (by mass) of nahco 3 in one alka-seltzer tablet. you must show your calculations to receive credit for this question. hint: use the masses that you measured in the lab as your masses of nahco 3 and alka-seltzer

Answer 1

To calculate the percentage (by mass) of NaHCO3 in one Alka-Seltzer tablet, measure the mass of the tablet before and after the reaction, subtract the mass after the reaction from the initial mass, and calculate the percentage.

Step-by-step explanation:

To calculate the percentage (by mass) of NaHCO3 in one Alka-Seltzer tablet based on the lab results, you need to use the masses measured in the lab. Here's how you can do it:

1. Measure the mass of the tablet (including the balloon) before the reaction.
2. Lift the balloon to make the tablet go into the water. Observe the reaction.
3. Measure the mass of the test tube, balloon, and remaining contents after the reaction.

To calculate the mass of NaHCO3, subtract the mass after the reaction from the initial mass of the tablet. Then, divide the mass of NaHCO3 by the initial mass of the tablet and multiply by 100 to get the percentage (by mass) of NaHCO3 in the tablet.