All of the elements<span> in Group Zero are </span>noble gases<span>. The list includes helium, neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and radon (Rn). Don't think that, because these </span>elements<span> don't like to react, we don't use them.</span>
I think is 3.5 pretty sure
Answer:
The mass of the products and reactants are the same on both sides of the equation.
The number of atoms of products and reactants are equal and hence it proves the law of conservation of mass.
.
02 is oxygen gas , having 2 particles of O, whereas F2 is Fluorine gas having two particles of F.
Answer:
0.09 m/s to the right
Explanation:
The principle of conservation of linear momentum states that in a system of colliding objects, the total momentum before collision is equal to the total momentum after collision, provided there is no external force.
The total momentum, in this question, is the sum of the momentum of the the two marbles. We assume velocity to the right is positive while to the left is negative. Thus, total initial momentum is

After collision, the first marble goes left. Let the velocity of the other marble be v. Then we have

Equating both momenta,



Hence, the larger goes right with a velocity of 0.09 m/s (since it has a positive sign).