Answer: Hello, Though ice and snow are both made up of water, there is a difference between the two. Snow is nothing but the frozen atmospheric vapour which falls in winters on earth as light flakes whereas ice is simply frozen water.
Explanation:
Answer:
The answer to your question is Cr₂O₃ + 3Mg ⇒ 2Cr + 3MgO
Explanation:
Data
Unbalanced chemical reaction
Cr₂O₃ + Mg ⇒ Cr + MgO
Reactants Elements Products
2 Cr 1
3 O 1
1 Mg 1
Balanced chemical reaction
Cr₂O₃ + 3Mg ⇒ 2Cr + 3MgO
Reactants Elements Products
2 Cr 2
3 O 3
3 Mg 3
Now the reaction is balanced
Volume of brethe consumed in a normal breathe is known to be tidal volume. The tidal volume of a person is 500 mL. There are 12 times a person can breathe in a minute.
Number of breathes in a minute 
Consumption of air per brethe 
Consumption of air per minute = 
Consumption of air per year 
Thus, 31.53 * 10^5 L of air consumed in a year by an astronaut.
The reaction is that,
1 mole is SiCL4 will produce 1 mole of Si(s) Since there is 1 to 1 relationship then we just multiply the enthalpy of reaction by the number of moles
Enthalpy = -625.5 kJ/mole × 12.5 Moles
= -7,818.75 KJ
= -0.78 ×10⁴KJ