Answer: The answer is Yes, because they were formed from the remains of plants and animals from millions of years ago.
<span>It's our bodies way of telling us it is dangerous
The peripheral nervous system recognizes that we are touching something that could burn our skin and sends a rush of pain to our hand and fingers so we will pull away quickly before any damage is done to our skin.
Hope this helped. Have a great day!</span>
Answer:
The given reaction in your problem is the ionic equation for an acid (carbonic acid) reacting with a base (sodium hydroxide). All components of the reaction are then written in ionic form except for reactant weak electrolytes and the driving force product compound of the reaction (H2O). See following explanation.
Explanation:
Metathesis Rxn: molecular equation of rxn
H₂CO₃(aq) + 2NaOH(aq) => Na₂CO₃(aq) + 2H₂O(l)
Ionic Equation: shows all components of the reaction
H₂CO₃(aq) + 2Na⁺(aq) + 2OH⁻(aq) => 2Na⁺(aq) + CO₃²⁻(aq) + 2H₂O(l)
H₂CO₃(aq) wk. electrolyte and H₂O(l) driving force compound are not shown ionized in ionic equation. Only strong electrolytes that ionize 100%; i.e., salts and strong acids and bases.
Net Ionic Equation: shows only the reactive components without the spectator ions (nonreactive components), in this case, the Na⁺(aq) ions.
H₂CO₃(aq) + 2OH⁻(aq) => CO₃²⁻(aq) + 2H₂O(l)
<u>Answer:</u> The correct answer is Option C.
<u>Explanation:</u>
Oxides are formed when a metal or a non-metal reacts with oxygen molecule. There are two types of oxides which are formed: Acidic oxides and basic oxides.
Acidic oxides are formed by the non-metals.
Basic oxides are formed by the metals.
From the given options:
- <u>Option 1:</u>

Sulfur is the 16th element belonging to Group 16 and period 3 of the periodic table. This is a non-metal and will form acidic oxide.
- <u>Option 2:</u>

Carbon is the 6th element belonging to Group 14 and period 2 of the periodic table. This is a non-metal and will form acidic oxide.
- <u>Option 3:</u>

Potassium is the 19th element belonging to Group 1 and period 4 of the periodic table. This is a metal and will form basic oxide.
- <u>Option 4:</u>

Phosphorus is the 15th element belonging to Group 15 and period 3 of the periodic table. This is a non-metal and will form acidic oxide.
- <u>Option 5:</u>

Sulfur is the 16th element belonging to Group 16 and period 3 of the periodic table. This is a non-metal and will form acidic oxide.
Hence, the correct answer is Option C.
Answer:
1.To discover new things.
2.To improve accuracy of existing experiment.
3.To prove or disprove theories.
4.To find anomalies in experiment.