8Fe + 6O₂ -----> 4Fe₂O₃
If eight atoms of iron react completely with six molecules of oxygen, 4 molecules of iron (III) oxide will be formed.
Answer:
Metamorphic
Explanation:
Because it describes as a rock framed from other rocks by the action of heat and pressure.
Answer:
Ionic solids
Explanation: Ionic solids—Made up of positive and negative ions and held together by electrostatic attractions. They're characterized by very high melting points and brittleness and are poor conductors in the solid state. An example of an ionic solid is table salt, NaCl.
Answer:
0.6L
Explanation:
The formula of molarity is molSolute/litreSolution
.
Answer:
1. 22 moles of FeCr2O7
2. 53.95 moles of O2
3. 77.25 moles of O2
Explanation:
4 FeCr2O7+ 8 K2CO3 + 1 O2-----------> 2 Fe2O3+ 8 K2CrO4 + 8 CO2
1. How many moles of FeCr2O7 are required to produce 44 moles of CO2?
Equate the moles of the compounds in the question
4 moles of FeCr2O7 produces 8 moles of CO2
(44 *4 / 8) moles of FeCr2O7 will produce 44 moles of CO2
= 44 *4 / 8
= 22 moles
2. How many moles of 02 is required to produce 107.9 moles of Fe2O3?
1 mole of O2 = 2 moles of Fe2O3
(107.9 *1 / 2) moles of O2 will be required to produce 107.9 moles of Fe2O3
= 107.9 * 1 / 2
= 53.95 moles
3. The ratio of moles for FeCr2O7 to O2 in the reaction is
4 : 1
309 : x ; solve for x
x = 309 * 1 / 4
x =77.25 moles of O2
