Answer:
2S +3O2 =2SO3
Explanation:
2 at the front of sulphur is to equalize the 2 put in SO3.
Answer:
C
Explanation:
Cause wave's get larger and larger and it will repeat over and over
(please mark me brainly est)
Answer:
Mg2+ and Ca2+
Explanation:
Hard water are water that happen to contain salts of calcium and magnesium ions. They can occur as chlorides, sulphates, bicarbonates etc. Hard water wastes soap as it requires an above normal amount to form lathers.
The metallic ions are;
Mg2+ and Ca2+
Answer:
: -ve
: -ve,
: +ve
Explanation:
Endothermic reactions are those in which heat is absorbed by the system and exothermic reactions are those in which heat is released by the system.
for Endothermic reaction is positive and
for Exothermic reaction is negative.
Entropy is the measure of randomness or disorder of a system. If a system moves from an ordered arrangement to a disordered arrangement, the entropy is said to decrease and vice versa.
is positive when randomness increases and
is negative when randomness decreases.

As 15 moles of gaseous reactants are changing into 18 moles of gaseous products, randomness is increasing and thus
is positive.
Using Gibbs Helmholtz equation:



Thus
is negative ,
is positive and
is negative.
What is the name of the particles that make up all matter?
<u>Matter is made up of atoms and molecules. </u>