Answer:
hexagonal layers slide
Explanation:
The layers in graphite can slide over each other because the forces between them are weak. The delocalised electrons are free to move through the structure, so graphite can conduct electricity.This makes graphite slippery, so it is useful as a lubricant .
<em>i think it's right</em>
hope it helps :)
When water evaporates, its latent heat of evaporation absorbs heat.
<h3>What is Latent heat?</h3>
A body or thermodynamic system can release or absorb latent heat during a constant-temperature process, often a first-order phase transition.
There are two types of latent heat:
- The heat of freezing
- The heat of vaporization
The statements about water's latent heat and changes in state are:
- The heat of freezing is the quantity of thermal energy produced as a liquid freezes, and the heat of vaporization is the quantity of thermal energy needed to change a liquid into a gas.
- Water may move energy from one location to other thanks to latent heat.
- There aren't any weak (hydrogen) bonds between water molecules in the vapor state.
- Hurricanes are propelled by the latent heat of condensation, which occurs when water vapor condenses and turns into a liquid.
- All water molecules in the solid state are connected by flimsy (hydrogen) bonds.
To learn more about latent heat, refer:
brainly.com/question/5401454
#SPJ4
Answer : The amount of heat absorbed are, 258485.5 J
Solution :
Formula used :

where,
Q = heat gained = ?
m = mass of water = 650 g
c = specific heat of water =
= final temperature = 
= initial temperature = 
Now put all the given values in the above formula, we get the final temperature of copper.


Therefore, the amount of heat absorbed are, 258485.5 J
Answer:
6 moles of SO₃ formed.
Explanation:
Given data:
Number of moles of SO₃ formed = ?
Number of moles of oxygen react = 3 mol
Solution:
Chemical equation;
2SO₂+ O₂ → 2SO₃
now we will compare the moles of oxygen and sulfur trioxide.
O₂ : SO₃
1 : 2
3 : 2/1×3 = 6 moles
Thus, six moles of SO₃ will formed.
Answer: = 3.11 x 10^14 s^-1
Explanation:
Use the formula E = hv
This formula uses the assumption that the unit for energy is in Joules/photon.
124 kJ = 124000J
To get 124000J/mol into a unit of J/photons, we need to divide by the number of photons in a mole, which is 6.022 x 10^23.
And thus, we need
124000/6.022 x 10^23 = 2.06 x 10^-19J/photon
We can plug it in to E = hv by
2.06 x 10^-19J = (6.63 x 10^-34 J s)(v) Isolate v by
v = (2.06 x 10^-19J)/(6.63 x 10^-34 J s)
= 3.11 x 10^14 s^-1