Method 1: gravimetry
advantages: Impurities in the sample can be identified
disadvantages: The process is long, because it goes through several stages
Method 2: titration
advantages: the process is fast, because the titrate and titrant react immediately
disadvantages: Sometimes the determination of the end point of the titration is carried out too fast or too slowly so that the calculations carried out are inaccurate
Release of heat, color change, or produce of bubbles create are chemical changes that create sound.
the reaction is HF + NaOH which leads to NaF
D.
Since d is the furthest point from the fulcrum the least amount of downward force need be applied.
Explanation:
Molecular equation:
A molecular equation:
Molecular equations shows the molecular formula of compounds or moleucles of elements of all reactants and products.
AlCl₃
+ Na₂CO₃
→ NaCl
+ Al₂(CO₃)₃
Balanced equation : 2AlCl₃ + 3Na₂CO₃ → 6NaCl + Al₂(CO₃)₃
Ionic equation:
Water soluble reactants and products splits into their constituent ions while non-ionizing or gaseous reactants and products are represented by formulae or molecules.
2Al³⁺
+ 6Cl⁻
+ 6Na⁺
+ 2CO₃²⁻
→ 6Na⁺
+ 6Cl⁻
+ Al₂(CO₃)₃
Net ionic equation:
Ions that are non-reactive are called spectator ions, they are cancelled out to give the net ionic equation.
2Al³⁺
+ 6Cl⁻
→ Al₂(CO₃)₃
Learn more:
Ionic equation brainly.com/question/2947744
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