<h3><u>Answer;</u></h3>
B) a system is a group of objects analyzed as one unit
C) energy they moves across system boundaries is conserved
<h3><u>Explanation;</u></h3>
- System is a group of objects analyzed as one unit
.
- An open system is a system that freely exchanges energy and matter with its surroundings.
- A closed system is a system that exchanges only energy with its surroundings, not matter. An isolated system does not exchange energy or matter with its surroundings.
Answer:
How Does a Solar Panel Generate Power? Solar panels use the photons produced by sunlight to generate direct current (DC) electricity. When the photons hit the panel they are absorbed by the panel's semiconducting silicon material.
Explanation:
Answer:A(n) molecule that is made up of atoms that are chemically bonded is the smallest recognizable unit of a compound.
Explanation:

so:



so:

it means that
in

of acid there is

moles of acid

so:

it means that:
in

of water there is

moles of water
therefore:

So your answers are:

and the mole fraction is:
How small the unit of measurement is. The smaller the unit of measurement the more precise it is.