Scientific theory's will always change based upon new evidence. The 'Big Bang Theory' is always changing when new evidence arises.
However, on the other hand, scientific laws will never change.
Answer:
Uses of Distillation
Distillation is used for many commercial processes, such as the production of gasoline, distilled water, xylene, alcohol, paraffin, kerosene, and many other liquids. Gas may be liquefied and separate. For example: nitrogen, oxygen, and argon are distilled from air.
Answer:
2.36 g of solute
Explanation:
Note: I assume that the problem is asking to find the grams of solute, since the grams of solution are already given (17.0g).
A solution consists of two substances: a solute and a solvent. In particular:
- The solute is the substance that is dissolved in the solvent (generally, the solute is in solid form)
- The solvent is the substance making the majority of the solution, and in which the solute is dissolved (generally, the solvent is in liquid form)
In this problem, we know that the total mass of the solution (solute + solvent) is
And we know that the percentage of solute in the solution is
Therefore, the mass of the solute can be written as
And substituting the mass of the solution, we find:
Mols of acid needed: 0.4 liters x 0.10 mol/liter = 0.04 mol
Volumen of acid in the bottle than contaiins 0.04 mol of acid: V = #moles/M = 0.04 mol/12.1 mol/liter = 0.003306 liters = 3.306 ml
Then you need 3.3 ml of acid from the bottle and 396.7 ml of pure water to get 400 ml of acid 0,1 M
Answer:
covalent bonds
Explanation:
A chemical bond is a lasting attraction between atoms that enables the formation of chemical compounds and may result from the electrostatic force of attraction between atoms with opposite charges, or through the sharing of electrons as in the covalent bonds.