In a chemical change, the molecules in the reactants interact to form new substances. In a physical change, like a state change or dissolving, no new substance is formed.
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I think the correct answer would be the third option. The change that will create a more dilute solution should affect the amount of the solvent since it is the component that is greater than the solute. Being dilute would mean there is a very small amount present of a solute in a solution. Increasing the amount of the sovent, would result to a lesser concentration of the solute.
4.5 L
Explanation:
We will use the combined gas law formula;
P₁V₁/T₁ = P₂V₂/T₂
Because the pressure remains the same, it cancels out and what remains is;
V₁/T₁ = V₂/T₂
Before evaluating remember to change the temperatures into Kelvin;
-23° = 250.15 K
177° = 450.15 K
We replace the variables with known values;
2.5 / 250.15 = V₂ / 450.15
V₂ = 2.5 /250.15 * 450.15
V₂ = 4.4988 L
≅ 4.5 L
Answer:
Explanation:
1. The smallest complete unit of a compound or diatomic gas
ATOM
Atoms are small tiny particles that makes up a molecule. It is regarded as the smallest indivisible particle that parts in a chemical reaction.
2. A new substance formed by the combination of two or more different atoms
COMPOUNDS
Compounds are substances composed of two or more kinds of atoms. Their properties differs from those of the constituent elements that combines to make them up.
3. Path of electrons around an atomic nucleus
SHELL
The shell describes the path of an electron round a nucleus
4. A substance consisting of only one type of atom
MONOATOMIC MOLECULE
It is an aggregate of one type of atom.
They would get out of there burrows in around spring when they are mostly out and the start reproducing
