Answer:
Solidification (freezing)
Explanation:
This is the process whereby water or any liquid changes into solid.
Answer:
Karina is right.
Explanation:
Karina is right because nothing in the population was said to change, also the population of the other fish is still the same. So nothing changed because nothing died off. Also, there was no medium spot fish originally so that means there had to be a mutation for a fish to all of a sudden come out with medium spots.
The Ions present in CaCl₂ are,
Ca²⁺ Cl⁻ Cl⁻
Means 1 formula unit contains 1 Ca²⁺ ion and 2 Cl⁻ ions.
Also, 1 mole of CaCl₂ contains 6.022 × 10²³ formula units.
So, 1 mole formula units of CaCl₂ contain,
2 × 6.022 × 10²³ = 1.20 × 10²⁴ Cl⁻ Ions
Now, Calculating number of moles contained by 220 g of CaCl₂,
As,
110.98 g of CaCl₂ = 1 mole
Then,
220 g of CaCl₂ = X moles
Solving for X,
X = (220 g × 1 mol) ÷ 110.98 g
X = 1.98 moles
As,
1 mole contained = 1.20 × 10²⁴ Cl⁻ Ions
Then,
1.98 mole will contain = X Cl⁻ Ions
Solving for X,
X = (1.98 mol × 1.20 × 10²⁴ Ions) ÷ 1mol
X = 2.38 × 10²⁴ Cl⁻ Ions
Answer:
Yes
Explanation:
Scientific laws must always be accompanied by theories. Without theories, laws cannot be formed. In other words, scientific laws are made from scientific theories.
<em>When a hypothesis has been tested by several independent researchers and found to be true, this leads to the development of a theory. A theory becomes a law when it is able to hold true against a wide range of similar phenomena.</em>
