Molar mass Mg(OH)2 = <span>58.3197 g/mol
Number of moles:
45.7 / 58.3197 => 0.7836 moles
Volume = 1087 / 1000 => 1.087 L
Therefore:
Molarity = moles / volume
Molarity = </span>0.7836 / 1.087
=> 0.7208 M
Explanation:
Internal energy is the sum of all the energies inside or within a system because molecules of the system will have kinetic, potential, rotational, vibrational etc energies.
Internal energy arises because of random or disordered movement of particles within a system.
Therefore, internal energy of a system is the sum of kinetic and potential energy of all the particles present inside the system.
The variable for internal energy is "U". Also, change in internal energy is represented by
.
I would say that you would need 12 to have it be equal for this reaction to happen. I hope that this helped. :)
Answer: 2
Explanation:
To calculate the moles :

According to stoichiometry :
1 mole of
are produced by = 4 moles of 
Thus 1.18 moles of
will be produced by=
of 
Mass of 
Thus 85.0 g of
will be required and 2 steps are required to get the answer.
The rate of the reaction is measurable quantity that refers to the amount or how much is are chemical substances reagents used up or converted into the product over some period of time.
Rate = change in the amount/time.
This can indirectly be observed through many ways, such as the volume of gas given off if the byproduct is a gas being produced, the colour of the solution etc.