Answer:
choice A
Explanation:
it it occurs when a gas escapes from a container through a hole of diameter.
In order to get the answer, you have to know the formula of how to convert grams to mole and by that you can get the number of molecules.
The answer is 2 moles of N2O5. This is shown by the solution:
(0.25 g N2O5) (1 mol/ 108 g)=2.31 molecules
The answer is 2 molecules.
Answer:
C. a positive calcium ion and a negative oxygen ion
Explanation:
Ionic bonds are generally positive and negative because one is gaining electrons while the other is losing.
Answer:
660 cubic millimeters
Explanation:
Assuming this is a cube - the equation is Volume = L × W × H - plug in all the numbers provided and you get 660 cubic millimeters.
Answer:
Resistance
Explanation:
Resistance is the measure of the opposition of current in a circuit.
