the max # of grams of K that can be obtained from 100.grams of KHCO3?
How many mols KHCO3 do you have? mols = grams/molar mass
How many mols K are in that.You know it's the same number because there is 1 K atom in 1 molecule of KHCO3.
Then g = mols x molar mass.
To determine the maximum amount of grams of potassium (K) that can be obtained from 100 grams of potassium bicarbonate (KHCO3), we need to consider the molecular weights of the elements involved.
The molecular weight of KHCO3 can be calculated as follows:
K = 39.10 g/mol
H = 1.01 g/mol
C = 12.01 g/mol
O = 16.00 g/mol
KHCO3 = K + H + C + (3 * O)
= 39.10 + 1.01 + 12.01 + (3 * 16.00)
= 39.10 + 1.01 + 12.01 + 48.00
= 100.12 g/mol
Since the molar mass of KHCO3 is 100.12 g/mol, we can determine the amount of K in 100 grams by calculating the mass percent of K in KHCO3.
The molar mass of K is 39.10 g/mol, so the mass percent of K in KHCO3 is:
(39.10 g K / 100.12 g KHCO3) * 100%
= (39.10 / 100.12) * 100%
= 39.07%
Therefore, in 100 grams of KHCO3, the maximum amount of K that can be obtained is:
(39.07 / 100) * 100 g
= 39.07 grams
Hence, the maximum amount of grams of K that can be obtained from 100 grams of KHCO3 is 39.07 grams.
To determine the maximum number of grams of K that can be obtained from 100 grams of KHCO3 (potassium bicarbonate), you need to consider the molar mass and the chemical formula of KHCO3.
The molar mass of KHCO3 can be calculated as follows:
- K (Potassium) = 39.1 g/mol
- H (Hydrogen) = 1.0 g/mol
- C (Carbon) = 12.0 g/mol
- O (Oxygen) = 16.0 g/mol
Adding the molar masses of each element together gives:
Molar mass of KHCO3 = 39.1 + 1.0 + 12.0 + (3 * 16.0) = 100.1 g/mol
Now, to find the maximum grams of K, you need to calculate the percentage composition of potassium in KHCO3. In the formula, there is one atom of K for every molecule of KHCO3.
The atomic mass of K in KHCO3 is (39.1 g/mol) / (100.1 g/mol) * 100% ≈ 39.1%
To find the maximum grams of K, multiply the percentage composition of K by the total mass of KHCO3:
(39.1% of 100 grams) = 39.1 grams of K
Therefore, the maximum grams of K that can be obtained from 100 grams of KHCO3 is 39.1 grams.