A base could be added so anything with a hydroxide or oxide group
E.g NaOH
Answer:
Explanation:
Since the <em>gas mixture</em> is <em>ideal</em>, the <em>composition</em> by <em>volume</em> is equal to the composition by moles.
Thus, the mole composition is:
Use a basis of 100 moles and find the mass of each gas, using its corresponding molar masss:
- N₂: 30 moles × 28g/mol = 840 g
- O₂: 30 moles × 16g/mol = 480 g
- H₂: 40 moles × 2g/mol = 80 g
Total mass = 840g + 480g + 80g = 1,400g
Then, the mass fraction of oxgygen is the mass of oxygen divided by the total mass of the gas mixture:
Which in percentage is 34.29%.
Rounded to the nearest integer that is 34% ← answer
Solid to gas - sublimation
Explanation:
- Polar molecule are soluble in polar solvents
- Non polar molecules are soluble in non polar solvents.
Stearic acid is an organic acid composed of seventeen carbons with one carboxylic acid group in the end. Its chemical formula is . The hydrophobic part is this chain is made up of 17 carbon atom and hydrophilic part is only of made up of carboxylic group due to which it won't get dissolve in water.Which means that stearic acid will get dissolve in non polar solvent that is hexane. Hence, stearic acid is non polar molecule.
Where as sucrose an organic molecule with molecular formula of .Due to presence of polar hydroxyl(-OH) groups in molecule , molecule will get easily dissolve in polar solvent that is water. Since,the hydrophobic part in the molecules are covered by the hydrophilic part due to which it gets easily dissolve in water. Hence, the sucrose in polar molecule.
I think sublimation because sublimation is the process by which substances change back to gases immediately