When cells and animals break down into food they produce energy and when fossils fuel is burned
Answer:
One can arbitrarily divide forensic science into three broad groups: medical, laboratory, and field services.
Answer:
The piston will move down
Explanation:
We can solve this problem by using Charle's Law, which states that:
"For a fixed mass of an ideal gas kept at constant pressure, the volume of the gas is directly proportional to the absolute temperature of the gas"
Mathematically:
where
V is the volume of the gas
T is the absolute temperature of the gas
In this problem, we have a gas placed in a container with a moveable piston. We are also told that the gas is kept at constant pressure, so we can apply Charle's Law.
We are told that the gas is cooled down: this means that its absolute temperature decreases. Therefore, according to Charle's Law, this means that the volume of the gas also decreases: therefore, the piston of the container will move down.
It is a covalent bond due to the fact that both atoms are sharing valence electrons with each other.
Answer:
Mg(s) + 2NaF (aq) —> MgF₂ (aq) + 2Na(s)
Explanation:
Magnesium => Mg
Sodium fluoride => NaF
Magnesium fluoride => MgF₂
Sodium metal => Na
The equation can be written as:
Mg + NaF —> MgF₂ + Na
Thus, the above equation can be balance as illustrated below:
Mg + NaF —> MgF₂ + Na
There are 2 atoms of F on the right side and 1 atom on the left side. It can be balance by writing 2 before NaF as shown below:
Mg + 2NaF —> MgF₂ + Na
There are 2 atoms of Na on the left side and 1 atom on the right side. It can be balance by writing 2 before Na as shown below:
Mg + 2NaF —> MgF₂ + 2Na
Mg(s) + 2NaF (aq) —> MgF₂ (aq) + 2Na(s)
Now, the equation is balanced.