Answer:
The solution's new volume is 1.68 L
Explanation:
Dilution is the procedure to prepare a less concentrated solution from a more concentrated one, and simply consists of adding more solvent. So, in a dilution the amount of solute does not vary, but the volume of the solvent varies.
In summary, a dilution is a lower concentration solution than the original.
The way to do the calculations in a dilution is through the expression:
Ci*Vi=Cf*Vf
where C and V are concentration and volume, respectively; and the i and f subscripts indicate initial and final respectively.
In this case, being:
- Ci= 7 M
- Vi= 0.60 L
- Cf= 2.5 M
- Vf=?
Replacing:
7 M*0.60 L= 2.5 M* Vf
Solving:
Vf= 1.68 L
<u><em>The solution's new volume is 1.68 L</em></u>
Explanation:
The two main categories of energy are potential energy (stored
energy) and kinetic energy (energy presently doing
work or causing change)...I hope this helps.
Answer:c
Explanation: A molecule is two atoms bonded together
Answer:
b) 63.7 kJ
Explanation:
we have ΔH = 127.3 kJ/mol
for 1.00 mole of CO the equation can be re-written as,
since the number of moles are halved ΔH also gets halved as per Hesse's law of constant summation,
ΔH =
= 63.7 kJ
<u>Answer and explanation:</u>
We know that magnesium and hydrochloric acid are to react with each other so the chemical equation for this reaction will be:
Here in this reaction, the mole ratio of the reactants used is 1:1 that means we need equal amounts of magnesium as well as hydrochloric acid to have a complete reaction.
Therefore, the mass would be same since according to the law of conservation of mass, energy can neither be created nor destroyed but can only be changed.