Assuming equal concentrations, arrange these solutions by pH.NH3 (aq)
Sr(OH)2 (aq)
HBr (aq)
HCN (aq)
KOH (aq)
Answers
The pH of solution often differs. Assuming equal concentrations, The rank these solutions by pH are in the order of Highest pH to Lowest pH are Sr(OH)2(aq), KOH (aq), NH3(aq), HCN (aq) and HBr (aq).
- Electrolytes when ranked on the basis of their strength are known to be weak and strong electrolytes.
The Strong electrolytes often dissociate fast in water when compared to the weak electrolytes that often dissociate partially.
- To determine pH from acids or base, you need to note which is the stronger acid/base. The pH scale ranges often from 0 to 14.
Acids are known to have pH value smaller than 7, bases are known to have pH value greater than 7, and neutral salts have a pH value of 7.
Learn more from
Answer:
Highest pH(most basic)
Sr(OH)2(aq)
KOH (aq)
NH3(aq)
HF (aq)
HClO4(aq)
Lowest pH(most acidic)
Explanation:
The concentration of H+ ion will determine the pH of a solution. The pH actually reflects the ratio of H+ ion and OH- since both of them can combine into water. Solution with more H+ ion will have a lower pH and called acidic, while more OH- will have high pH and be called basic. Strong acid/base will be ionized more than weak acid/base.
Sr(OH)2(aq) = strong base, release 2 OH- ion per mole
KOH (aq) = Strong base, release 1 OH- per mole
NH3(aq) = weak base, release less than 1 OH- per mole
HF (aq) =strong acid, release 1 H+ per mole
HClO4(aq) = stronger acid, release 1 H+ per mole
Related Questions
Which solution has the greater concentration?A. 0.500 mole LiCl dissolved in 250 ml solutionB. 0.250 mole LiCl dissolved in 250 ml of solutionC. Both the same
Help asap pleaseWhat state of matter has a defined volume but undefined shape?a.gasesb.solids and liquidsc.liquids and gasesd.liquids
What property can be used to tell the difference between two minerals, if they have the same hardness?
What role does the inner ear play in hearing?captures sound wavesconverts sound waves into electrical signalsremoves high and low sound waves that are harmfultransmits sound waves from air to fluids
osmosis
B.
mitosis
C.
diffusion
D.
active transport
Answers
B) The attractive forces are stronger in a liquid
C) The attractive forces are stronger in a solid
D)The attractive forces of a solid allow the particle to move freely while the liquid molecules vibrate around a fixed point
Answers
Answer:
Option-C (The attractive forces are stronger in a solid)
Explanation:
The substance either exist as a Solid or Liquid depends upon on the following two factors;
ii) Kinetic Energy:
Greater the K.E of particles, greater will be the distance between the particles of a substance. In Liquids the K.E of particles is greater than the K.E of particles in Solid. Hence, the Liquid Particles separated by greater distance as compared to particles of Solids.
ii) Attractive Intermolecular Forces:
Greater the Attractive Intermolecular Forces between the particles of a substance, smaller will be the distance between the particles. As the distance between the particles in Solid state of substance are very small as compared to that of Liquids hence, it can be concluded that the Attractive Intermolecular Forces in Solids are stronger than Liquids.
force
speed
position
Answers
Answer:
Velocity
Explanation:
The change of velocity rate it's the definition of acceleration.
While increasing or decreasing velocity, it means that an acceleration it's happening.
Using some math:
This can be read as "the acceleration it's equal to te variation of velocity with respect to time"
Answers
The silicon uses in :
1- Micro-chips.
2- Motherboards
3- components on nano-technologies
4- tablet
5- Phones
The explanation:
- When the silicon incorporated into electronics, They are termed as silicon wafers. It is used as a semiconductor.
- And when it combined with the other conductors this process called doping and become ideal to make transistors and be able to amplify electric signals.
That's how Silicon shape our technological reality.
Answers
B. The theory might be modified if necessary.
C. Bernoulli will come up with another hypothesis.
D. Bernoulli's principle will be called "Bernoulli's hypothesis."
Bernoulli's principle is a theory given the name "principle" because _____.
A. it is actually more like a hypothesis
B. nearly all scientists agree that it is correct
C. it is one of the first things you would learn about in college
D. you can't provide evidence for it, but scientists know that it is correct
Answers
Answer:
B. The theory might be modified if necessary.
B. nearly all scientists agree that it is correct
Explanation:
B. The theory might be modified if necessary.
The Bernoulli's principle relates the speed of fluid to their pressures. It simply states that when the speed of fluids increases there is a drop in pressure.
Supposing we find new evidence about how the principle works, the normal scientific thing to do is to modify the existing principle. New information and observations about a principle would only provide a modification to the existing one. An example is the Dalton's atomic theory, which was centered on the atom being the smallest indivisible particle: the theory was later modified when new ideas about the atom surface.
B. nearly all scientists agree that it is correct
Before a hypothesis is adopted to the context of scientific principle, the ideas behind it must have tested and must be repeatable. Different sources will verify the authenticity of such scientific claim to see if such can be adopted. Therefroe, nearly a large numbr of scientists must agree that it is correct.