Answer:
a)22.2°C after adding magnesium
b)17.3°C before adding magnesium
c) 4.9 is change
Answer:
Asnwer to your question
Explanation:
Can you add a picture or anything like that?
Answer:
80g
Explanation:
2H2 + O2 —> 2H2O
MM of H2O = (2x1) + 16 = 2 + 16 = 18g/mol
Mass conc. of H2O from the balanced equation = 2 x 18 = 36g
MM of O2 = 16 x 2 = 32g/mol
From the equation,
32g of O2 reacted to produce 36g of H2O.
Therefore Xg of O2 will react to produce 90g of H2O i.e
Xg of O2 = (32x90)/36 = 80g
Answer:
Earth's average surface gravity is about 9.8 meters per second per second. When an object is tossed off a building top or a cliff apex, for instance, it accelerates toward the ground at 9.8 meters per second per second. The Moon's surface gravity is about 1/6th as powerful or about 1.6 meters per second per second,
Explanation:
Answer:
B. The particles rarely touch each other.
Explanation:
The particles of gases are far apart, so they rarely touch each other. The particles of liquids can slide past each other, and the particles of solids are locked in place next to each other.
In all three states of matter, the particles
- Have a definite volume
- Are in constant motion
- Have kinetic energy
