Answer:
When a light is shone on the extract, pigment molecules absorb energy. Because the pigments have been isolated from the thylakoid membranes of the chloroplasts, the energy cannot be used for photosynthesis. Instead, the energy is released as heat and light in a process called fluorescence.
They are both ionic compounds
Answer:
-2.07 × 10³ kJ
Explanation:
Let's consider the following balanced equation.
4 NH₃(g) + 5O₂(g) → 4 NO(g) + 6H₂O(g) ΔHrxn =−906 kJ
The enthalpy of reaction is -906 kJ, that is, 906 kJ are released upon the reaction of 4 moles of NH₃. Taking into account that the molar mass of NH₃ is 17.0 g/mol, the heat associated with the complete reaction of 155 g of NH₃ is:
.2 moles of Carbon Dioxide because you are given .38 moles of water and you convert moles of water to grams and then into moles of CO2
Answer:
93.33 g of Fe
Explanation:
The balanced equation for the reaction is given below:
4Fe + 3O₂ —> 2Fe₂O₃
Next, we shall determine the masses of Fe and O₂ that reacted from the balanced equation. This can be obtained as follow:
Molar mass of Fe = 56 g/mol
Mass of Fe from the balanced equation = 4 × 56 = 224 g
Molar mass of O₂ = 2 × 16 = 32 g/mol
Mass of O₂ from the balanced equation = 3 × 32 = 96 g
SUMMARY:
From the balanced equation above,
224 g of Fe reacted with 96 g of O₂.
Finally, we shall determine the mass of Fe required to react with 40 g of O₂. This can be obtained as follow:
From the balanced equation above,
224 g of Fe reacted with 96 g of O₂.
Therefore, Xg of Fe will react with 40 g of O₂ i.e
Xg of Fe = (224 × 40)/96
Xg of Fe = 93.33 g
Therefore, 93.33 g of Fe is required to react with 40 g of O₂.