Law of Action and Reaction mean "To every action there is equal and opposite reaction.
Explanation:
It is Newtons third law which explained few things such as :-
1. The nature of the forces between the two interacting objects.
2. According to this law , the force that is exerted from Object-1 to Object-2 is said to be equal in magnitude and opposite to the direction to the force exerted to object 2 upon object 1.
3. Eaxmple - As we push against the wall - Action , the wall in return opposes equal force to resist the pressure of the hand - Reaction.
Answer:
1.88 × 10²³ particles
Explanation:
Given data:
Volume of H₂ = 0.7 L
Number of particles at STP = ?
Solution:
First of all we will calculate the number of moles of H₂.
PV = nRT
n = PV / RT
n = 1 atm . 7 L / 0.0821 L. atm. mol⁻¹. k⁻¹ × 273.15 K
n = 7 atm. L / 22.43 L. atm. mol⁻¹
n = 0.312 mol
it is known that,
2 g H₂ = 1 mol = 6.022 × 10²³ particles
For 0.312 mol
0.312 × 6.022 × 10²³ particles
1.88 × 10²³ particles
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Answer: 
Explanation:
- The atomic mass of nitrogen is 14.0067 g/mol.
- The atomic mass of oxygen is 15.9994 g/mol.
This means the molecular mass of nitrogen dioxide is 
g/mol.
Dividing this molecular mass of the compound we need to find, we get that
.
So, the final answer is 
