I think the correct answer from the choices listed above is the first option. Compared to compounds that possess only dipole-dipole intermolecular forces, compounds that possess hydrogen bonding generally have <span>higher melting points. This is because hydrogen bonding is a stronger force than dipole-dipole.</span>
Answer:
You never listed the options
Explanation:
A chemical reaction is a process that involves rearrangement of the molecular or ionic structure of a substance, as opposed to a change in physical form or a nuclear reaction.
The enthalpy change of the reaction, ΔH = -311 kJ
Enthalpy change involved in the reaction of 300 g of CO = -10972.5 kJ
<h3>What is the enthalpy change for the reduction of ethyne to form ethane?</h3>
The enthalpy change for the reaction is obtained from the summation of the enthalpies of the reactions of the intermediate steps according to Hess's law.
The equation of the reaction is given below:
The enthalpy of the reaction, ΔH = ΔH₁ + 2ΔH₂ + (-ΔH₃)
ΔH = {(-1299) + (2 * -286) + (1560)}Kj
ΔH = -311 kJ
The equation for the methanation reaction is given below:
3 H₂O + CO → CH₄ + H₂O
The enthalpy for the methanation reaction is as follows:
ΔH = 1.5ΔH₁ + 0.5*(-ΔH₂) + ΔH₃ + -ΔH₄
ΔH = (-483.6 * 1.5) + (0.5 * 221.0) + (-802.7) + (393.5)
ΔH = -1024.1 kJ/mol
Molar mass of CO = 28 /mol
Enthalpy change involved in the reaction of 300 g of CO = 300/28 * -1024.1 kJ/mol
Enthalpy change involved in the reaction of 300 g of CO = -10972.5 kJ
In conclusion, the enthalpy changes are calculated from the enthalpy values of the intermediate reactions.
Learn more about enthalpy changes at: brainly.com/question/26991394
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Answer:
b. The molarity of the solution increases
Explanation:
The correct answer is option b, that is the molarity of the solution increases.
Because the molarity is the concentration of the solution and it is explained as the amount of solute in amount of solution.
Solution: is the solute dissolved in solvent.
So if we increases the amount of solute in solvent the concentration in terms of molarity of solution increases and if we increase amount of solvent or water then the concentration or molarity increases.
Suppose we have form a sugar solution of 1 L by adding 4 mole of sugar then what happen
Use the Molarity formula
Molarity = no. of moles / 1 L of solution
put values in the formula
Molarity = 4/ 1 L of solution = 4 M
So the molarity of solution is 4 now if we add 2 mole more sugar to the same amount of sugar and amount of solution remain the same
now the no. of moles of sugar = 6 mole
So,
Use the Molarity formula
Molarity = no. of moles / 1 L of solution
put values in the formula
Molarity = 6 mol / 1 L of solution = 6 M
So the correct option is b.
Circumfrence= diameter X pi
therefore its 3232pi
so the circumference is
10153.63inches
or 10150inches to 4sf