Answer:All matter consists of small particles which are in a continual state of motion
Explanation
The answer is diamagnetism. It is a significant mechanical
effect that happens in all materials; when it is the only influence to the
magnetism, the material is named diamagnetic. Quartz and water are samples
of diamagnetic materials. The diamagnetic influence
is usually unimportant in materials holding strong lasting magnetic moments.
In order of weakest to strongest it's Fluid, Rolling, Sliding, Static.
Answer:
a) KI and Na₃PO₄
b) HF
c) CaBr₂
Explanation:
The depression in freezing point, relative lowering of vapor pressure and elevation in boiling point are colligative properties.
The collegative properties depend upon the number of solute particles.
Let us see the concentration of particles in each of the given solutions:
a) 0.010 m Na₃PO₄ in water : each molecule will give three sodium ions and one phosphate ion.
So the concentration of particles in the solution = 4 X 0.01 = 0.04 m
b) 0.020 m CaBr₂ in water : each molecule will give one calcium ion and two bromide ion thus the concentration of particles in the solution
= 3 X 0.02 = 0.06 m
c) 0.020 m KCl in water: each molecule gives two ions thus the concentration of solution = 2 X 0.02 = 0.04 m
d) 0.020 m HF (weak acid) in water: the acid is weak, so each molecule will not give two ions completely (complete dissociation will not be observed). concentration of solution will be more than 0.02 but less than 0.04.
a) Both KCl and Na₃PO₄ will have same boiling point as 0.04 C₆H₁₂O₆.
b) the solution with least concentration of solute will have highest pressure. Thus HF is the answer,
c) the largest depression will be in the solution with highest solute concentration: Answer: CaBr₂.
Smashing the cube into pieces
Explanation:
Smashing the cube into pieces will most likely increase the reaction rate between the manganese oxide and hydrogen peroxide.
The rate of a chemical reaction is a measure of the speed of a chemical reaction.
Some factors that affects the rate of chemical reaction are:
- Nature of the reactants
- Concentration of the reactants or pressure if gases.
- Temperature
- Presence of a catalyst.
- Sunlight(some reactions are light catalyzed)
- The nature of reactants implies the physical state of matter, bond type or surface area exposed of reacting species.
- The surface area exposed is directly proportional to the reaction rate.
- Breaking the cubes into smaller pieces exposes more surface area to the chemical action and the reaction rate increases.
Learn more:
Activation energy brainly.com/question/3930233
#learnwithBrainly
