Answer:
the water is diffrent because it is now a gas not a liquid
Explanation:
There are four major components found in wood, and these
are:
cellulose
lignin
starch
protein
Among the four, I believe that cellulose and lignin are
the most difficult to degrade because they contain large amount of cross-linked
heavy hydrocarbons.
Answer:
cellulose
lignin
Answer:
The correct answer is 1.194 J/g.ºC
Explanation:
The heat released by the material is absorbed by the water. We put a minus sign (-) for a released heat and a plus sign (+) for an absorbed heat.
We know the mass of the material (mass mat= 25.0 g) and the mass of water (mass H20= 100.0 g) and the specific heat capacity of water is known (Shw=4.18 J/g.ºC), so we can equal the heat released by the material and the heat absorbed by water y calculate the specific heat capacity of the material (Shm) as follows:
heat released by material = heat absorbed by water
-(mass material x Shm x ΔT)= mass water x Shw x ΔT
-(25.0 g x Shm x (24ºC - 80ºC)= 100.0 g x 4.18 J/g.ºC x (24ºC-20ºC)
25.0 g x Shm x (56ºC) = 100.0 g x 4.18 J/g.ºC x 4ºC
⇒Shm= (100.0 g x 4.18 J/g.ºC x 4ºC)/(25.0 g x 56ºC)
Shm= 1.194 J/g.ºC
Answer:
The mass of 4.5 moles of Cu(NO3)2 is 843.55g
Explanation:
Mass = moles x Molar mass
Mass = 4.50(187.55)
= 843.97g
Answer:
The correct answers are given below
Explanation:
1 An increase of one in atomic number and no change in the mass number.
2 All the above statements are correct.
3 A decrease of one in atomic number and a decrease of four in mass number.
4 Have a high neutron to proton ratio.
