Answer:
Ca(OH)₂ and HCl(aq)
Explanation:
We have the products of a reaction, CaCl₂ and H₂O. Since the products are a salt and water, this is likely to be a neutralization reaction. In such a reaction, an acid and a base react to form a salt and water.
- The acid provides the anion of the salt. Since the anion is Cl⁻, the acid is HCl(aq).
- The base provides the cation of the salt. Since the cation is Ca²⁺, the base is Ca(OH)₂(aq).
The complete molecular equation is:
Ca(OH)₂ + 2 HCl(aq) → CaCl₂ + 2 H₂O
Answer:
This question is a bit vague. We're not told if 500ml is the volume of the solution and additional info is not given to calculate the volume of pbNo3 being added.
If you solve with 500ml as the volume of solution ... You'll have the answer below.
Molarity=moles of solutes/Volume of solvent(in litres)
moles of solute given=1.565moles
Volume = 500ml. There's 1000ml to a litre. Dividing by 1000ml to convert to Litres... You have 0.5L
Molarity = 1.565/0.5
=3.13M
Physical: abrasion, crystallization, insolation, melting and freezing.
Chemical: hydration, oxidation(rust), carbonic acid action, and hydrolysis
Answer is: solid is the state in which matter has a definite shape and volume.There are two types of solids:crystalline (solids that have a very orderly, 3-dimentional arrangement of atoms or molecules) and amaorphous (composed of atoms or molecules that are in no particular order).
Plasma is is the state of matter that does not have a definite shape or volume. <span>Plasmas and some solids (metals) conduct electric current.</span>
1.0 mole ---------- 22.4 at STP
4.5 moles --------- ?
4.5 * 22.4 / 1.0
= 100.8 L of H₂
