A...because both of them(carbon and oxygen)are nonmetal
Answer:
i)
1 is Argon
2 is Kalium
3 is Calcium
ii)
Y belongs to alkaline metals
Z belongs to alkaline earth metals
iii)
Kalium (Y) is alkaline metal
speed = distance / time
v = d / t
If we simplify this and isolate t, then we get t = d / v
Answer:
1.57
Explanation:
moles = mass / molar mass
moles = 69 / 44.013
moles = 1.57
