Answer:
d. Sum of product enthalpies minus the sum of reactant enthalpies
Explanation:
The standard enthalpy change of a reaction (ΔH°rxn) can be calculated using the following expression:
ΔH°rxn = ∑n(products) × ΔH°f(products) - ∑n(reactants) × ΔH°f(reactants)
where,
ni are the moles of products and reactants
ΔH°f(i) are the standard enthalpies of formation of products and reactants
The structure of the compound n‑ethyl‑3‑methylpentanamide is attached to this answer.
<h3>What is IUPAC nomenclature?</h3>
The IUPAC nomenclature was given in order for us to be able to draw the structure of a compound from its name. This is the generally accepted means of naming compounds globally.
The structure of the compound n‑ethyl‑3‑methylpentanamide in which all the hydrogen attched are shown attached to this answer.
Learn more about IUPAC nomenclature: brainly.com/question/2094768
The percent error associated with Jason’s measurement is 0.596%.
HOW TO CALCULATE PERCENTAGE ERROR:
- The percentage error of a measurement can be calculated by following the following process:
- Find the difference between the true value and the measured value of a quantity.
- Then, divide by the true value and then multiplied by 100
- The true value of the density of iron is 7.874 g/mL
- Jason observed value is 7.921 g/mL
Difference = 7.921 g/mL - 7.874 g/mL
Difference = 0.047 g/mL
Percentage error = 0.047/7.874 × 100
Percentage error = 0.596%.
Therefore, the percent error associated with Jason’s measurement is 0.596%.
Learn more: brainly.com/question/18074661?referrer=searchResults
Answer:
Two Electrons.
Explanation:
Strontium is the atom with atomic number 38, and electron configuration is [Kr] 5S^2 which mean just two electrons more than Krypton which one of the Noble gases.
