<h3><u>Answer;</u></h3>
1)Ba(ClO3)2(s)--->BaCl2(s)+3O2(g) - Redox reaction
2)2NaCl(aq)+K2S(aq)--->Na2S(aq)+2KCl(aq) - None of the above
3)CaO(s)+CO2(g)--->CaCO3(s) - None of the above
4)KOH(aq)+AgCl(aq)---->KCl(aq)+AgOH(s)
-precipitation reaction
5)Ba(OH)2(aq)+2HNO2(aq)--->Ba(NO2)2(aq)+2H2O(l) - Acid-base neutralization reaction
<h3><u>Explanation;</u></h3>
- Ba(ClO3)2(s)--->BaCl2(s)+3O2(g)
In this reaction, chlorine is reduced and oxygen is oxidized. Both reduction and oxidation occur in this reaction. Therefore, this is a redox reaction.
- 2NaCl(aq)+K2S(aq)--->Na2S(aq)+2KCl(aq)
In this reaction, both Na2S and KCl are soluble in water. Therefore the reaction is non of the above. Since it can not be a double displacement reaction in which two compounds react and cations and anions exchange their places to form new compounds.
- CaO(s)+CO2(g)--->CaCO3(s)
In this reaction CaO and CO2 combine to form calcium carbonate. This is a synthesis reaction, and thus its none of the above choices
- KOH(aq)+AgCl(aq)---->KCl(aq)+AgOH(s)
In this reaction, the salt KCl is soluble in water and AgOH is insolubel in water. Therefore, this is a precipitation reaction.
- Ba(OH)2(aq)+2HNO2(aq)--->Ba(NO2)2(aq)+2H2O(l)
In this reaction, nitrous acid acts as an acid and barium hydroxide acts as a base. Therefore, barium hydroxide and nitrous acid react to form salt and water. Therefore, this reaction is acid-base neutralization reaction.
The air flowe through the trachea
Answer:
The correct option is (c).
Explanation:
Given that,
Mass of iron, m = 3 kg = 3000 g
The temperature of ice increases from 20°
C to 25°C.
The specific heat of iron is 0.45 J/g°C
We need to find the energy required to raise the temperature. The formula is given by :
So, 6750 J of energy is required to raise the temperature or iron.
Answer:
1) eathquake
earthquake is the natural calamities where there is the vertical and horizontal shaking of the
earth crust. it is cause due to overlappibg of the different plates that are present in the earth surface. when this plates intersect or expand the earth occurs
consequences are it causes loss of life and human property , degards the environment , it leads to flood, landslides etc The damage caused by earthquakes is from ground shaking, ground rupture, landslides, tsunamis, and liquefaction.
Next - volcanic eruption
its is the out flow of the larva from the inner of the earth to other surface. it is cayse due to high pressure exerted on the surface of the earth that leads to explode the inner larva.
its consequences are it degards the environment and loss of the beauty of the nature , there is loss of human life , widlife , etc. volcanic eruption include infectious disease, respiratory illness, burns, injuries from falls, and vehicle accidents related to the slippery, hazy conditions caused by ash. When warnings are heeded, the chances of adverse health effects from a volcanic eruption are very low.