Answer:
Mechanical energy
Explanation:
Given that,
Potential energy of an object is given by :
P = mgh
The kinetic energy of an object is given by :
Where
m is mass
h is height
v is velocity of the object
The sum of potential and kinetic energy is equal to total energy or the mechanical energy.
Hence, if air resistance is negligible, the sum total of potential and kinetic energies of a freely falling body is equal to mechanical energy.
<u>Answer:</u>
<u>For A:</u> The mass of oxygen per gram of sulfur for sulfur dioxide is 0.997 g
<u>For B:</u> The mass of oxygen per gram of sulfur for sulfur trioxide is 1.5 g
<u>Explanation:</u>
The chemical equation for decomposition of sulfur dioxide follows:
We are given:
Mass of sulfur = 3.47 g
Mass of oxygen = 3.46 g
To calculate the mass of oxygen per gram of sulfur, we apply unitary method:
For every 3.47 g of sulfur, 3.46 g of oxygen will form.
So, for 1 gram of sulfur, of oxygen will form.
Hence, the mass of oxygen per gram of sulfur for sulfur dioxide is 0.997 g
The chemical equation for decomposition of sulfur trioxide follows:
We are given:
Mass of sulfur = 5.50 g
Mass of oxygen = 8.25 g
To calculate the mass of oxygen per gram of sulfur, we apply unitary method:
For every 5.50 g of sulfur, 8.25 g of oxygen will form.
So, for 1 gram of sulfur, of oxygen will form.
Hence, the mass of oxygen per gram of sulfur for sulfur trioxide is 1.5 g