Answer:
the answer is the 2nd option
Explanation:
distance is divided by rime
One correct thging is that there are the same amount of positive and negative atoms
Answer:
the storm knocked down trees creating a dam blocking the path for water to move
Explanation:
Fe + 3NaBr → FeBr3 + 3Na
The Na is replaced by the Fe atom.
Answer:

Explanation:
From the question we are told that:
Pressure 
Temperature 
Volume 
Heat Produced 
Generally the equation for ideal gas is mathematically given by



Therefore


Since
Heat of combustion of Methane=889 kJ/mol
Heat of combustion of Propane=2220 kJ/mol
Therefore

Comparing Equation 1 and 2 and solving simultaneously




Therefore
Mole fraction 0f Methane is mathematically given as


