Sodium hydrogen carbonate NaHCO3, also called baking soda, is an active ingredient in some antacids used for the relief of indigestion. Determine the percent composition of sodium hydrogen carbonate.

To determine the percent composition of sodium hydrogen carbonate (NaHCO3), we need to calculate the percentage of each element present in the compound.

The compound NaHCO3 consists of three different elements: sodium (Na), hydrogen (H), carbon (C), and oxygen (O).

To calculate the percent composition, we need to know the molar mass of each element and the molar mass of the compound.

The molar mass of sodium (Na) = 22.99 g/mol
The molar mass of hydrogen (H) = 1.01 g/mol
The molar mass of carbon (C) = 12.01 g/mol
The molar mass of oxygen (O) = 16.00 g/mol

Now, let's calculate the molar mass of sodium hydrogen carbonate (NaHCO3):
Molar mass of NaHCO3 = (1 x molar mass of Na) + (1 x molar mass of H) + (1 x molar mass of C) + (3 x molar mass of O)
Molar mass of NaHCO3 = (1 x 22.99 g/mol) + (1 x 1.01 g/mol) + (1 x 12.01 g/mol) + (3 x 16.00 g/mol)
Molar mass of NaHCO3 = 22.99 g/mol + 1.01 g/mol + 12.01 g/mol + 48.00 g/mol
Molar mass of NaHCO3 = 83.01 g/mol

Now, we can calculate the percentage of each element in NaHCO3:

Percentage of sodium (Na) = (molar mass of sodium / molar mass of NaHCO3) x 100%
Percentage of sodium (Na) = (22.99 g/mol / 83.01 g/mol) x 100%
Percentage of sodium (Na) = 0.2772 x 100%
Percentage of sodium (Na) = 27.72%

Similarly, you can calculate the percentage of hydrogen (H), carbon (C), and oxygen (O) by using their respective molar masses.

Percentage of hydrogen (H) = (1.01 g/mol / 83.01 g/mol) x 100%
Percentage of carbon (C) = (12.01 g/mol / 83.01 g/mol) x 100%
Percentage of oxygen (O) = (48.00 g/mol / 83.01 g/mol) x 100%

Finally, the percent composition of sodium hydrogen carbonate (NaHCO3) is:
27.72% sodium (Na)
1.22% hydrogen (H)
14.47% carbon (C)
57.59% oxygen (O)