Answer:
(ANSWER)
2 KNO3 + H2CO3 = K2CO3 +2 HNO3 is the balanced equation.
PA BRAINLYES
Answer:
1. Oxygen
Total no of electrons 8
Group 6
No of valence electrons 6
Period 2
No of valence shell 2
2.Sodium
Total no of electrons 11
Group 1
No of valence electrons 1
Period 3
No of valence shell 3
3. Phosphorus
Total no of electrons 15
Group 5
No of valence electrons 5
Period 3
No of valence shell 3
Answer:
A) Carbon dioxide and Oxygen
Explanation:
Percentage of gases in the Planet's atmosphere:
- Carbon dioxide =<u> </u><u>4</u><u> </u><u>%</u><u> </u>
- Nitrogen =<u> </u><u>72</u><u> </u><u>%</u><u> </u>
- Oxygen =<u> </u><u>24</u><u> </u><u>%</u><u> </u>
Percentage of gases in the Earth's atmosphere:
- Carbon dioxide =<u> </u><u>0.036</u><u> </u><u>%</u><u> </u><em>(</em><em>traces</em><em>)</em>
- Nitrogen =<u> </u><u>78</u><u> </u><u>%</u><u> </u>
- Oxygen =<u> </u><u>21</u><u> </u><u>%</u><u> </u>
___________________
On observing the percentage composition of the atmospheres of the two Planets, we get:
- The newly discovered planet has more percentage of <u>Oxygen</u> than The Earth.
- Percentage of <u>Carbon dioxide</u> is more in the planet than in the Earth
- <em>Nitrogen</em> is <u>less</u> in the planet than in the Earth.
___________________
Answer:
What's asked is the name of the gases that are in higher amounts in the atmosphere of the newly discover planet
Therefore,
<h3>A) Carbon dioxide and Oxygen</h3>
Answer:
The standard entropy or reaction ΔS° =+324.6J/mol.K
Explanation:
The reaction is
2H2O(l) → 2H2(g) + O2(g)
Standard Molar Entropies of Selected Substances at 298 K are
Substance S∘ (J/mol⋅K)
H2(g) 130.6
O2(g) 205.0
H2O(g) 188.8
H2O(l) 69.9
The standard entropy of reaction will be obtained from standard entropy of formation as given below
ΔH°= 2(130.6)+(205.0)-2(69.9) (Jol/mol.K)
ΔH°=261.2+205.0-139.8
ΔH°=+324.6Jol/mol.K
Explanation:
The overall rate of a reaction between two species doubles when: the order of both species changes or any of the species changes.
The overall order of the reaction is found by adding up the individual orders. For example, if the reaction is first order with respect to both A and B (a = 1 and b = 1), the overall order is 2. Therefore overall order is 2 or second order reaction although order of individual species is 1.