A catalyst will speed up the activation energy and therefore speed up the reaction. The products will form fast because of this.
Answer:
B
Explanation:
it is bigger then earth so it will have a greater mass.
I'd say it's single replacement/displacement
When two atoms of Hydrogen combine together, or fuse, they make an atom of Helium.
Answer:
4 moles
Explanation:
A mole is equal to 6.02214076 × 1023 of any chemical unit (atoms, molecules, ions)
To find number of moles in 89 litres of water vapor use the following formula:
1 mole = 22.4 L
That is 1 L = mole
Volume of water vapor = 89 litres
Therefore,
Number of moles in 89 litres = ≈ 4 moles