The answer is no.4 Settles out
- Because the solute particles in the true solution doesn't settle, and it can diffuse rapidly, pass through filter paper.
- But the solute particles in the colloidal solution can be made to settle by centrifugation.
The formula for potassium chlorate is: 2KClO₃ → 2KCl + 3O₂
If moles = mass ÷ molar mass
then moles of KClO₃ = 25 g ÷ [( 39 × 1 ) + ( 35.5 × 1) + ( 16 × 3)] g/mol
= 25 g ÷ ( 122.5 g ) g/mol
= 0.2041 mol
Now the mole ratio of KClO₃ : O₂ is 2 : 3
∴ if moles of KClO₃ = 0.2041 mol
then moles of O₂ = ( 0.2041 mol ÷ 2 ) × 3
= 0.3061 mol
Now since mass = moles × molar mass
∴ the mass of oxygen produced = 0.3061 mol × ( 16 × 2) g/mol
= 9.796 g
∴ the grams of oxygen gas produced when 25 grams of potassium chlorate is decomposed is ~ 9.80 g.
The trend of ionization energy in the periodic table is decreasing from right to left and from top to bottom. In this case, we are given with elements <span>K, Ca, Ge, Se, Br, Kr and see the periodic table to check the trend. The answer from highest to lowest Kr, Br, Se, Ge, Ca, and K</span>
Answer:
The enthalpy of atomization is the enthalpy change that accompanies the total separation of all atoms in a chemical substance. This is often represented by the symbol ΔₐₜH or ΔHₐₜ. All bonds in the compound are broken in atomization and none are formed, so enthalpies of atomization are always positive.
Explanation:
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