Answer:
A hypothesis is something you can test a theory is just a thought that you have.
Answer is: Solid is represented when pulled slowly, liquid when pulled fast, gas when pulled vigorously.
For example, nitrogen molecules have weakest intermolecular bonds in gas phase and move fast and without order.
Cooling is change from liquids to solids. In solid state (for example ice) movement of molecules is more slow than movement of molecules in liquids (for example water).
In solid, molecules are closely packed, stiff and do not changes of shape or volume. Solid object (for example iron) does not take on the shape of its container.
Liquids have definite volume, but no fixed shape.
Gases (for example nitrogen and neon) not have definite volume and fixed shape, it depends on its container.
Answer:
15 grams of water will absorb 2,500 Joules in going from 20.0 to 60.0 C.
Explanation:
The heat involved in raising a mass (m) of a substance with a specific heat (c) from one temperature to another (Delta T) is given by:
Heat = mc(Delta T)
2,500 Joules = m*(4.186J/gC)*(60C-20C)
2,500 Joules = m*(4.186J/gC)*(40C)
2,500 Joules = m*(4.186J/gC)*(40C)
m = (2,500J)/(4.186*40J/g)
m = 14.93 grams
Answer:
5.45mL
Explanation:
Using Boyle's law equation:
P1V1 = P2V2
Where; P1 = initial pressure
P2 = final pressure
V1 = initial volume
V2 = final volume
According to this question, P1 = 1.2atm, V1 = 25mL, P2 = 5.5atm, V2 = ?
1.2 × 25 = 5.5 × V2
30 = 5.5V2
V2 = 30/5.5
V2 = 5.45mL
Therefore, 5.45 mL sample of F2 gas will occupy a syringe at 5.5atm.
