Answer:
Average speed of helium is higher than argon.
Explanation:
The average speed of helium is higher than argon atom under the conditions specified because of lower mass of the helium atom as compared to argon atom. Average speed of an atom is inversely proportional to mass of the atom. If mass of an atom decreases, the atom moves with higher speed while on the other hand, if the mass of an atom increases the average speed of an atom decreases.
Answer:
1.iron lead zinc
2)calcium barium magnesium
Answer for this question might be number 2
One mole Hydrogen need 1/2mol O_2 .
Moles of Hydrogen
Moles of O_2
