Answer:
Percent yield = 88.23%
Explanation:
Given data:
Percent yield of ammonia = ?
Actual yield = 15 g
Mass of nitrogen = 14 g
Solution:
Chemical equation:
N₂ + 3H₂ → 2NH₃
Number of moles of nitrogen:
Number of moles = mass/molar mass
Number of moles = 14 g/ 28 g/mol
Number of moles = 0.5 mol
Now we will compare the moles of ammonia and nitrogen.
N₂ : NH₃
1 : 2
0.5 : 2/1×0.5 = 1 mol
Mass of ammonia/Theoretical yield
Mass = number of moles × molar mass
Mass = 1 mol × 17 g/mol
Mass = 17 g
Percent yield:
Percent yield = ( actual yield / theoretical yield )× 100
Percent yield = (15 g/ 17 g)× 100
Percent yield = 88.23%
Because the movement of the molecules slows, turning it solid.
Answer:
- A short-term environmental change is drought, smog, flooding, volcanic eruption, blizzards, and pollution this could happen in anyone of the food webs. That may effect how they will end up having to have to adapt to their environment so that they can continue to live there and not die off.
Explanation:
I don't know the second one
1. The newspaper solution that would work best with inks is alcohol since alcohol can dissolve inks.
2. Water can be used to carry salts since salts are soluble in water.
3. Oils can be used to carry fatty acids since they're both hydrophobic substances.<span />