Answer:
It would appear that the H2 gas is collected in a stoppered flask. Therefore, the volume of the gas is 138 mL minus the 5 mL occupied by the HCl, or 133 mL.
Explanation:
It is caco3 ok thats the answer
Answer:
Sun at the center.
Explanation:
The actual dictionary definition of Heliocentric defines it as, "Heliocentrism is the astronomical model in which the Earth and planets revolve around the Sun at the center of the Solar System. Historically, heliocentrism was opposed to geocentrism, which placed the Earth at the center."
M = GFM × N
Sodium Oxide
s Na O
v 1 2
s 2 1
d 2 1
f Na2O
Na2O
2 × 23 = 46
1 × 16 = 16
46 + 16 = 62g
GFM = 62g
N = 2.24 moles
M = ?
M = GFM × N
M = 62,2 × 2.24
M = 138.88g
