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Concept explainers
Interpretation :
The subatomic particles of atoms contributing the maximum to an atom’s mass are to be determined. Also, the subatomic particles determining the chemical properties of an atom are also to be determined.
Concept Introduction :
An atom has protons, neutron, and electron as the subatomic particle. The nucleus of an atom has two main subatomic particles, protons, and neutrons. The protons and electrons are electrically charged but neutrons are neutral.
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Answer to Problem 54A
The number of neutrons and protons contributing to the atom’s mass.
The subatomic particle of an atom is representing the chemical properties is a proton.
Explanation of Solution
The atom is made up of three particles such as protons, neutrons, and electrons. The number of neutrons and electrons present in an atom gives the information about the specific elements, where the neutrons term is related to the neutral character of neutrons, and protons are related to the positive charge.
Mass number = number of protons+ number of neutrons
For the mass number of an atom, there is two subatomic particles required that is protons and neutrons. The chemical properties are depending on the number of protons present in the atom.
The element is made up of a similar type of atom, the atom consists of three subatomic particles namely neutron, protons, and electron. Here, two subatomic particles are contributing to the
Chapter 3 Solutions
World of Chemistry
- Determine the entropy change for the reaction SO2(g) + O2(g) following information: Standard Entropy Values of Various Substance Substance SO2(g) 02(g) SO3(g) So (J/mol K) 248.2 205.0 256.8 → SO3(g) given thearrow_forwardIndicate which one of the following reactions most certainly results in a negative AS sys. O1402(g) + 3NH4NO3 (s) + C10 H22(1) → 3N2(g) + 17H2O(g) + 10CO2(g) ○ CO2(aq) = CO2(g) ○ H₂O(g) = H₂O(s) CaCO3(g) = CaO(s) + CO2(g) O CuSO4.5H2O(s) = CuSO4(s) + 5H2O(g)arrow_forwardEstimate the DH°rxn of the reaction below: H H-C-C=C-H H Н A table of bond energy Bond H Bond Energy (kJ/mol) C-H 413 C-O 360 C=O 743 C-C 348 |C = C 612 O-H 463 H-H 436 + H-H -> H H-C. - H | | 1 HHHarrow_forward
- Show work...don't give Ai generated solutionarrow_forwardGiven the standard enthalpies of formation for the following substances, determine the reaction enthalpy for the following reaction. 3A(g) + 1B (g) 4C (g) + 7D (g) Substance AH in kJ/mol A (g) - 25.07 B (g) - 36.51 C (g) - 90.09 D (g) + 56.11 AHran =?kJarrow_forwardWhat is the change in internal energy (ΔU) when a system is heated with 42.0 J of energy while it does 110.0 J of work?arrow_forward
- Can you help me solve this problem and explain what the answers are?arrow_forwardFor which reaction below does the enthalpy change under standard conditions correspond to a standard enthalpy of formation? (Choose all that applies) SO2(g) + 1/2 O2(g) → SO3(g) 2H2(g) + C(s) → CH4(g) Mg(s) + 1/2 O2(g) → MgO(s) CO(g) + H2O(g) → CO2(g) + H2(g) CO2(g) + H2(g) → CO(g) + H2O(g) 1/2 H2(g) + 1/2 N2(g) + 3/2 O2(g) → HNO3(g) CO2(g) + C(s) 2CO(g) N2(g) + 202(g) → 2NO2(g)arrow_forwardChoose all the molecules with zero standard-enthalpy-of-formation (AH% = 0) Fe(s) FeCl2(s) N2(g) H2O(l) 02(g) C(graphite) K(s) H2O(g)arrow_forward
- 8.5 g of potassium hydroxide (molar mass = 56.1 g/mol) dissolves in 125 g of water and the temperature of the solution increases by 15.58°C. Calculate the AH soln for potassium hydroxide. Assume the specific heat capacity of the solution is 4.2 J.g¨¹.ºC-1. KOH(s) → →K+ K(aq) + OH AH solution = ?kJ/mol (aq)arrow_forwardWhat will be the final temperature of a 8.79 g piece of iron (CP = 25.09 J/(mol · oC)) initially at 25.0oC, if it is supplied with 302.8 J from a stove?arrow_forwardIdentify the set of stoichiometric coefficients that balances the reaction equation for the combustion of the hydrocarbon below: _ C19 H4002 → CO2 + H2Oarrow_forward
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