If a typical antacid tablet contains 2.0 g of sodium hydrogen carbonate, how many moles of carbon dioxide should one tablet yield? compare this theoretical value with your results. (hint: you will first need to convert your mass into moles by dividing by the molar mass of nahco3 or sodium hydrogen carbonate a/k/a baking soda). , show all work and think about mole ratios relating co2 to nahco3.

Given mass of sodium hydrogen carbonate = 2.0 g

First, calculate the number of moles of sodium hydrogen carbonate.

Number of moles =       (1)

Molar mass of sodium hydrogen carbonate = 84 g/mol

Put the values in formula (1)

Number of moles =

= 0.023 mol

Sodium hydrogen carbonate is used to neutralise hydrogen chloride present in the stomach.

The reaction is as follows:

Here, 1 mole of sodium hydrogen carbonate gives 1 mole of carbon dioxide.

Thus, number of moles of sodium hydrogen carbonate is equal to number of moles of carbon dioxide.

0.023 mol of sodium hydrogen carbonate gives 0.023 mol of carbon dioxide for one tablet.

a. the law of proportion states the combination of 2 atoms in a specific ratio to produce multiple compounds such as the given statement of question ‘1st compound contains 88.8 % cu ’ indicates 88.8 g of cu is present along with 11.2 g oxygen in 100 g of compound whereas the statement ‘2st compound contains 79.9 % cu ’ indicates 79.9 g of cu is present along with 20.1 g oxygen in 100 g of compound

1st compound contains 88.8 g cu

for cu

m = 63 g /mol

atomic % = 88.8 /63 = 1.42

for o

m = 16 g /mol

atomic % = 11.2 /16 = 0.7

b. the emperical formula of 1st compound is

cu1.4o0.7

cu2o