Answer:
The mass of oxygen is 12.10 g.
Explanation:
The decomposition reaction of potassium chlorate is the following:
2KClO₃(s) → 2KCl(s) + 3O₂(g)
We need to find the number of moles of KClO₃:
Where:
m: is the mass = 30.86 g
M: is the molar mass = 122.55 g/mol
Now, we can find the number of moles of O₂ knowing that the ratio between KClO₃ and O₂ is 2:3
Finally, the mass of O₂ is:
Therefore, the mass of oxygen is 12.10 g.
I hope it helps you!
if density = m(mass) / v(volume) then the answer would be 3
1. Tilt
2. Revolution - The Earth revolves around the Sun.
3. The North pole always point in the same direction.
Hope it helps.
Answer:
g. red, orange, yellow, blue
Explanation:
red is the hottest color and blue is the coolest. :)
The purple roots of beetroot are eaten as a vegetable. I am assuming that they are talking about the actual veg.