Answer:
Mass = 9.58 g
Explanation:
Given data:
Mass of Fe₂O₃ formed = ?
Mass of Fe = 6.7 g
Solution:
Chemical equation:
4Fe + 3O₂ → 2Fe₂O₃
Number of moles of Fe:
Number of moles = mass/molar mass
Number of moles = 6.7 g/ 55.8 g/mol
Number of moles = 0.12 mol
now we will compare the moles of Fe and Fe₂O₃.
Fe : Fe₂O₃
4 : 2
0.12 : 2/4×0.12 = 0.06 mol
Mass of Fe₂O₃:
Mass = number of moles × molar mass
Mass = 0.06 mol × 159.69 g/mol
Mass = 9.58 g
Answer:
c
Explanation:
because your separating the atoms in the water
The book will serve as a flat surface on which you
will later place additional weights. It has its own
mass, which you need to measure.
Zero the balance. Place the book on the balance.
Measure the mass to the nearest gram (1 g).
498 g
In this experiment, you will measure all masses in
kilograms. Convert the book’s mass to kilograms.
0.498 kg
Answer:
It will remain the same
Explanation:
The equilibrium constant of the reaction will remain the same if the concentration of the OH is increased.
Changes in concentration values of any of the reactant does not affect the value of the equilibrium constant.
- The equilibrium constant is a constant at a given temperature.
- It is temperature dependent.
- Since we have no change in temperature, therefore, the equilibrium constant will not change.
