The state of matter is liquid.
Answer:
The Bond energy of H-Br is +366 KJ
Explanation:
Bond energy is the energy required to break one mole of a covalent bond in a gaseous molecule. It is denoted as 'E'. The bond energy for Chlorine E(Cl-Cl) molecule is +242 KJ. This means that it takes 242 KJ of energy to break the Cl-Cl bond. It also takes the same amount of energy to form Chlorine molecule from chlorine atoms.
Bond energies can be used to calculate the enthalpy of reactions
Using the example from the question
2HBr(g) + Cl2(g) -------> 2HCl(g) + Br2(g)
Two H-Br and one Cl-Cl bonds will be broken and two H-Cl bonds with one Br-Br bonds will be formed
E(Cl-Cl) = +242 KJ
E(H-Cl) = +431 KJ
E (Br-Br) = +193 KJ
E (H-Br) = ?????
Therefore, Enthalpy (ΔH) = bond breaking - bond forming
-81.1 = [2x + 242] - [(2 x 431) + 193)]
-81.1 = [2x + 242] - [862 + 193]
-81.1 = [2x + 242] - 1055
-81.1 + 1055 = 2x + 242
973.9 = 2x + 242
973.9 - 242 = 2x
731.9 = 2x
x = 731.9 / 2
x = 365.95
x = 366 KJ
x is the bond energy for H-Br which is +366 KJ
Molar mass H₂O = 18.0 g/mol and O₂ = 32.0 g/mol
2 H₂O --------> O₂ + H₂
(2* 18.0 g ) H₂O ----------> 32 g O₂
72.0 g H₂O ----------------> ?
mass of O₂ = 72.0 * 32 / 36
mass of O₂ = 2304 / 36
= 64 g of O₂
hope this helps!
False. They don't borrow electrons at all. They already have their respective electron affinities. This is called as electronegativity, and it's an occurence where it already has its own from its actual structure. It never borrows any electrons at all.
<h3><u>Answer;</u></h3>
Hydroelectric power
<h3><u>Explanation</u>;</h3>
- Hydroelectric power is produced when a turbine converts the kinetic energy of falling water into mechanical energy. Then a generator converts the mechanical energy from the turbine into electrical energy.
- Hydroelectric power plants uses a dam on a river to store water in a reservoir. Water released from the reservoir flows through a turbine, spinning it, which in turn activates a generator to produce electricity.