Answer:
Molecules must collide with the correct orientation and with enough energy to cause bond breakage and formation.
Explanation:
Answer:
0.0125mol/dm³
Explanation:
Given parameters:
Mass of carbon dioxide = 0.22g
Volume of water = 400cm³
Unknown:
Concentration in mol/dm³ = ?
Solution:
Concentration is the amount of solute dissolved in a solvent.
The formula is expressed as;
Concentration =
Number of moles =
Molar mass of CO₂ = 12 + 3(16) = 44g/mol
Number of moles = = 0.0005mol
Now,
1000cm³ = 1dm³
400cm³ = = 0.4dm³
Insert the parameters and solve;
Concentration = = 0.0125mol/dm³
<h3>
Answer:</h3>
Sodium
<h3>
Explanation:</h3>
- To answer the question we need to know a few things.
What are cations?
- Cations are positively charged ions that are formed when an atom of an element loses an electron(s).
What elements form cations?
- Metallic elements form cations since they react by losing electrons thus forming ions with a positive charge.
- For example, alkali metals such as sodium form cations with a charge of +1.
- In this case, sodium will form a cation with a charge of + 1, Na⁺
What are negatively charged ions?
- Negatively charged ions are known as anions.
- They are formed by non-metallic elements such as sulfur, argon, silicon, etc.
It increases the degree of accuracy for your results.