"Hi there! So I have a chemistry project due in a few hours. I need to find the molar mass of a specific antacid tablet, but all I know is that the tablet is made up of 550mg CaCO3 and 110mg Mg(OH)2 I also know that the tablet has a mass 1.35g. How do I find the molar mass of the tablet, which is dissolved in 5o ml of water. I already know it isn't as simple as adding the molar masses togeather. Thankyou!
I've been in this business for 75 years and I've never heard of the molar mass of a tablet. Do you have any other information or an answer? The tablet has a filler of 1.35-0.550-0.110 = 0.690 g but nothing else about it's identity.
Hi! To find the molar mass of the antacid tablet, you need to calculate the number of moles of each compound present in the tablet. Then, you can add the molar masses of these compounds to find the molar mass of the tablet.
Let's start by finding the number of moles of each compound in the tablet. We can use the formula:
Number of moles = Mass / Molar mass
For calcium carbonate (CaCO3), we have a mass of 550 mg. To convert this to grams, we divide by 1000:
Mass of CaCO3 = 550 mg / 1000 = 0.55 g
To find the number of moles of CaCO3, we divide the mass by the molar mass. The molar mass of CaCO3 is the sum of the atomic masses of calcium (Ca), carbon (C), and three oxygen (O) atoms:
Molar mass of CaCO3 = (40.08 g/mol) + (12.01 g/mol) + (16.00 g/mol) x 3 = 100.09 g/mol
Number of moles of CaCO3 = 0.55 g / 100.09 g/mol = 0.0055 mol
Similarly, for magnesium hydroxide (Mg(OH)2), we have a mass of 110 mg. Converting this to grams:
Mass of Mg(OH)2 = 110 mg / 1000 = 0.11 g
The molar mass of Mg(OH)2 is the sum of the atomic masses of magnesium (Mg), two hydrogens (H), and two oxygens (O):
Molar mass of Mg(OH)2 = (24.31 g/mol) + (1.01 g/mol x 2) + (16.00 g/mol x 2) = 58.33 g/mol
Number of moles of Mg(OH)2 = 0.11 g / 58.33 g/mol = 0.00188 mol
Now, we can add the number of moles of CaCO3 and Mg(OH)2 to get the total number of moles in the tablet:
Total moles = 0.0055 mol + 0.00188 mol = 0.00738 mol
Finally, to find the molar mass of the tablet, you divide the total mass of the tablet by the total moles:
Molar mass of the tablet = 1.35 g / 0.00738 mol = 182.67 g/mol
So, the molar mass of the antacid tablet is approximately 182.67 g/mol.
Please make sure to double-check the atomic masses and calculations provided to ensure accuracy. I hope this helps you with your chemistry project!