What is the lowest temperature that a substance can reach
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Hope that helped! =)
Final answer:
The tail of a comet always points away from the Sun.
Explanation:
The tail of a comet always points away from the Sun. This is due to the interaction between the Sun's radiation and the comet's gas and dust particles. As the comet gets closer to the Sun, the solar radiation causes the ice within the comet to vaporize and release gas and dust particles, forming a glowing tail that always faces away from the Sun.
Learn more about Comet tail direction here:
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Show all work.
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Answer:
See below.
Explanation:
The mass of octane in the sample of gasoline is 0.02851 * 482.6 = 13.759 g of octane.
The balanced equation is:
2C8H18(l) + 25O2(g) ----> 16CO2(g) + 18H2O(g)
From the equation, using atomic masses:
228.29 g of octane forms 704 g of CO2 and 324.3 g of H2O
So the mass of CO2 formed from the combustion of 13.759 g of octane = (704 * 13.759) / 228.29
= 42.43 g of CO2.
Amount of water = 324.3 * 13.759) / 228.29
= 19.55 g of H2O.
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Chemical: burning paper, spoiled milk, a penny turning green
Metals with nonmetals, because their difference in electronegativity is below 1.7.
Nonmetals with nonmetals, because their difference in electronegativity is above 1.7.
Nonmetals with nonmetals, because their difference in electronegativity is below 1.7.
HELP!!!
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Answer:
Nonmetals with nonmetals, because their difference in electronegativity is below 1.7.
Explanation:
Covalent bond is the bond which is formed with the sharing of the electrons between the two atoms which are taking part in the bond. It is generally formed between the atoms with similar electronegativity values.
It is the bond which is generally occurs within non metals as they share electrons to complete their octet.
The difference in the electronegativity values of the atoms involving in a covalent bond must not exceed the value of 1.7 .
Correct answer:- Nonmetals with nonmetals, because their difference in electronegativity is below 1.7.
Answer:
Nonmetals with nonmetals, because their difference in electronegativity is below 1.7.
Explanation:
The dude above got it right, and his explanation is sound, so instead of explaining, I can guarantee this is correct, because I took the 03.03 test.
4PCl5(g) → P4(s) + 10Cl 2(g) ΔH = 3438 kJ
Answers
The value of ΔH will be 249.75 KJ.
To obtain the reaction :
PCl5(g) → PCl3(g) + Cl2(g)
We have to add the given reactions and then divide it by 4.
(i) adding the reactions
P4(s) + 6Cl2(g) → 4PCl3(g) ΔH = -2439 kJ
4PCl5(g) → P4(s) + 10Cl 2(g) ΔH = 3438 kJ
we get:
4PCl5(g) → 4PCl3(g) + 4Cl2(g), ΔH = 3438 - 2439
(ii) dviding by 4
PCl5(g) → PCl3(g) + Cl2(g) , ΔH = (3438 - 2439)/4
ΔH = 249.75 kJ is the required enthapy.
Learn more about enthalpy:
Answer:
The value of for the desired reaction will be 249.75 KJ.
Explanation:
The desired reaction is shown below
The desired reaction can be obtained by adding the given reactions and then dividing both sides by 4.
Net Enthalpy change for the desired reaction