The atmosphere is a mixture of gasses.
Argon monatomic in nature because it is a noble gas and has completely filled shells and thus does not form a bond with other elements.
Answer: C) Subatomic particles
Explanation: I just learned this in ap environmental science
Answer:
= 0.28M
Explanation:
data:
volume = 0.250 L
= 0.250dm^3 ( 1litre = 1dm^3)
moles = 0.70 moles
Solution:
molarity = 
= 0.70 / 0.250
molarity = 0.28 M