Answer: 0.125moles
Explanation:
From the question above, we are only given the values of the volume and molar concentration of CuSO4 solution.
Volume of CuSO4 solution = 250mL= 250/1000L = 0.25L
Molar concentration of CuSO4 solution= 0.50M
Number of moles of CuSO4= Molar concentration of CuSO4 × volume of CuSO4
Number of moles of CuSO4= 0.50mol/dm^3 × 0.25L
Number of moles of CuSO4= 0.125moles
Therefore 0.125moles of CuSO4 are used to make 250 mL of a 0.50M CuSO4 solution.
The net ionic equation is as below
H^+(aq) + H^-(aq) → H2O(l)
Explanation
from the chemical equation
HClO4(aq) + NaOH (aq) → H2O(l) + NaClO4(aq)
write ionic equation
that is,
H^+(aq)+ClO4^-(aq) + Na^+(aq) +OH^-(aq)→ H2O(l) + Na^+(aq)+ClO4^-(aq)
cancel the spectator ions in both side(ions that do no take place in a chemical equation)
that ClO4^- and Na^+
the net ionic is therefore
= H^+(aq) + OH^-(aq) → H2O(l)
hi there
your answer to this is :
When you lower the temperature, the molecules are slower and collide less. That temperature drop lowers the rate of the reaction. that is a greater density of molecules increases the number of collisions. When you decrease the pressure, molecules don't hit each other as often and the rate of reaction decreases.
i hope this helps you out
the source u needed was the question enter it in google
have a great afternoon
FaithRawlins14
Answer:
I think my answer is correct
B)
2
The correct answer among the choices given is option B. The one that describes a proper use of eyeglasses is that using diverging lenses to help a nearsighted person by moving the image from in front of the retina to the retina. For this, t<span>he lenses will diverge the light before it reach the eye and aim it to the retina, correcting our nearsighted visual.</span>