Answer:
Explanation:
PV / RT = n , n is number of moles
Total pressure = 96400 Pa
vapour pressure = 23.8 mm of Hg
= .0238 x 13.6 x 10³ x 10 Pa = 3236.8 Pa
Pressure of hydrogen gas P = 96400 - 3236.8
= 93163.2 Pa
n = 93163.2 x .0251 / 8.31 x 298
= .944 moles of hydrogen gas is produced
moles of magnesium reacted = .944
grams of magnesium reacted = .944 x 24 = 22.66 grams .
Answer:
C. have specific jobs
Explanation:
If an organism has specialized cells, then the cells performs specific jobs.
A group of cells that performs a specific job is called tissues.
- In higher organisms, cells are specialized for specific purposes in them.
- This is to ensure that cells are optimized to carry out certain functions.
- Specialization of cells usually occurs by cellular differentiation when an organism begins to form.
There are 2 valence elcetrons
It splits into two equal nuclei of approx. equal mass.
Answer:
Yes, this ring is pure gold because when we divide the mass by the volume we get our density for the ring, which comes out to about 19.32.
Explanation:
