I guess A is the correct answer
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Answer:True</h2>
Explanation:
Contact force is defined as the force a pair of objects experience when they are in contact.
Ex.normal force,friction.
Non-contact forces are defined as the forces a pair of objects experience even if they are not in contact.
Ex.electric force,magnetic force.
Given that a contact force exist between two interacting objects that physically contact each other. A non-contact force exist when two interacting objects are not in physical contact but can still influence each other.
So,the given statements are true.
Due to a difference in electronegativity between the two atoms. The atom with more electronegativity will attract the electrons to itself more than one with a lower electronegativity which will create a slight negative charge around the more electronegative. I hope this helps. Let me know if anything is unclear.
Answer : The number of moles of solute is, 0.0788 moles.
Explanation : Given,
Molarity = 0.225 M
Volume of solution = 0.350 L
Formula used:
Now put all the given values in this formula, we get:
Therefore, the number of moles of solute is, 0.0788 moles.
Answer:
I. Increasing pressure will allow more frequent successful collision between particles due to the particles being closer together.
II. Rate of reaction increases due to more products being made; as increased pressure favours the exothermic side of the equilibrium.
III. Increasing temperature provides particles lots of (Kinetic) energy, for more frequent successful collision due to the particles moving at a faster rate than before. However, favouring the endothermic side of the equilibrium due to lots of energy required to break and form new bonds.
IV. Rate of reaction increases due to increase temperature favouring both directions of the equilibrium - causing products to form faster.
Hope this helps!