Souring milk would actually be a chemical change because it changed the properties alltogether. You can't change soured milk into it's original taste.
Answer:
B.Four hydrogen nuclei combine into one helium nucleus.
Explanation:
Mass energy which is stored in a matter itself can be very powerful. A small amount of mass can result in a very large amount of energy as the speed of light is very large.
If we consider the two elements hydrogen and helium, a hydrogen nucleus is made of one proton and a helium nucleus is made of two protons and two neutrons.
The mass of hydrogen is 1.6726 x 10–27 kg, and the mass of helium is 6.6465 x 10–27 kg.
Four hydrogen nuclei combine into one helium nucleus would lead to decrease of total mass, and thus a release of energy such that the number of particles involved remains same.
Answer:
Barium nitrate or silver nitrate based on the anion our solute contains
Explanation:
I assume the situation is that currently the solute is soluble in water and you wish to make it insoluble.
It really depends on the soluble material you have, however, let's look at some specific cases.
- We have a salt in our solution. Addition of any of the three reagents will produce a double displacement reaction, that is, our cation will be replaced by another cation, either sodium, barium or silver cation.
- According to the solubility rules, all sodium salts are soluble, so sodium nitrate won't precipitate our anion.
- In case our solute contains sulfate, carbonate or phosphate, we may use barium nitrate to precipitate it, as barium sulfate, barium carbonate and barium phosphate are insoluble.
- In case our solute contains chloride, then silver nitrate is the way to go to precipitate it in an insoluble form of AgCl. Similarly, silver would form precipitates with carbonate, phosphate, iodide, bromide and slightly soluble silver sulfate (barium is the choice for sulfate, however).
All monomers have the capacity to form chemical bonds to at least two other monomer molecules. Polymers are a class of synthetic substances composed of multiples of simpler units called monomers.
Answer:
The equation ![\frac{[HI]^{2} }{[H_{2}[I_{2} ] }](https://tex.z-dn.net/?f=%5Cfrac%7B%5BHI%5D%5E%7B2%7D%20%7D%7B%5BH_%7B2%7D%5BI_%7B2%7D%20%5D%20%20%7D)
represent
(1) law of mass action
(2) mass action expression
(3) equilibrium constant expression
Explanation:
At a given temperature, the rate of a reaction at a particular instant is proportional to the product of the active masses of the reactants at that instant raised to powers which are numerically equal to the numbers of their respective molecules in the stoichiometric equation describe the reaction.
