Answer:
2.25?
Explanation:
Im a 7th grade and have no idea but I think the pressure Will be 2.25 ATM because 3 which is the volume after minus the 0.75 which was the first volume but I dont really know srry
In Celsius, unless you’re American.
Answer:
A system absorbs more energy than it releases and has a positive AH
Explanation:
Answer:
Explanation:
Endothermic (endo = into + thermic = heat) means that heat energy is going into a system.
The products will have more energy than the reactants and ΔH will be positive.
A is wrong, because ΔH is positive.
C and D are wrong, because the system absorbs more energy than it releases.
Answer:
Explanation:
The bottom picture shows a Mg atom. There are two electrons on the outside ring. When Mg reacts with something, these 2 electrons are given away. The top picture records that fact.
If you spill a chemical on you, you should call poison control or 911