I would personally say a Controlled Variable because you are purposefully not spraying the other arm.
Answer:
Air is one solution cant really explain why but it is
Answer: C) 0.020 m
Explanation:
Molality of a solution is defined as the number of moles of solute dissolved per kg of the solvent.

where,
n = moles of solute
= weight of solvent in g
Mole fraction of
is =
i.e.
moles of
is present in 1 mole of solution.
Moles of solute
= 
moles of solvent (water) = 1 -
= 0.99
weight of solvent =
Molality =
Thus approximate molality of
in this solution is 0.020 m
when two heavy hydrogens combine to for helium , it results in the formation of energy, and a neutron, along with the helium atom
Answer:
a producer and consumer relationship how several food chains and related.