Question

In: Chemistry

If the bond energy for A2, B2, and A-B is 300, 200 and 100 kJ/mole, respectively,...

If the bond energy for A₂, B₂, and A-B is 300, 200 and 100 kJ/mole, respectively, the change in energy for the following reaction A₂+B₂=2A-B should be (in kJ):

500

300

-300

400

-400

Based on Coulomb’s law, when the K⁺ and Cl^- ions are placed 10 nm apart, their interaction energy should be (in J):

-2.31x10^-19

-2.31x10^-20

2.31x10-20

2.31x10^-19

-2.31x10^-18

Using the energy equation for the H atom, determine its energy when its principal quantum number n=∞ (in J):

2.18x10^-19

2.18x10^-18

1.09x10^-18

4.26x10^-18

0

If a diatomic molecule has a vibrational force constant of k=240 kg s^-2 and a reduced mass of 1.627x10^-27 kg, its vibrational frequency should be (in cm^-1):

4079

1443

5770

2040

2885

Expert Solution

queen_honey_blossom answered 2 years ago

Consider the following reaction: A2 + B2 → 2AB ΔH = –321 kJ Bond energy (A2)...

Consider the following reaction: A2 + B2 → 2AB ΔH = –321 kJ Bond energy (A2) = 1/2AB Bond energy (B2) =393 kJ/mol. What is the numerical value for Bond energy (A2) ?

Suppose a , b , c ∈ Z . If a2 + b2 = c2 ,...

Suppose a , b , c ∈ Z . If a2 + b2 = c2 , then a or b is even. a) Proof by Contraposition b) Proof by Contradiction

What is the energy, in kJ/mole, associated with photons having the following wavelength A. 280nm B....

What is the energy, in kJ/mole, associated with photons having the following wavelength A. 280nm B. 400nm C. 750nm D. 4000nm What is the significane of each of these wavelengths

Calculate the total binding energy in kJ per mole nuclide and in kJ/mol nucleons for the...

Calculate the total binding energy in kJ per mole nuclide and in kJ/mol nucleons for the following nuclides, using the data given below. Nuclide Total binding energy kJ/mol nuclide kJ/mol nucleons (a) 12 6 C (b) 17 8 O (c) 234 90 Th Particle or atom Mass (u) proton 1.00728 neutron 1.00866 electron 0.00055 12 6 C 12.00000 17 8 O 16.99913 234 90 Th 234.04360 1 u = 1.66054×10-27 kg

ionization energy is usually expressed in units of kj/ mole 1000 j = 1 Kj use...

ionization energy is usually expressed in units of kj/ mole 1000 j = 1 Kj use the bohr equation to calculate the ionization energy of hydrogen in K j/ mole ? show your work

The equation of an ellipse is x2/a2+y2/b2=1, where a and b are positive constants, a ³...

The equation of an ellipse is x2/a2+y2/b2=1, where a and b are positive constants, a ³ b. The foci of this ellipse are located at (c, 0), and (-c, 0), where c = (a2 – b2)1/2. The eccentricity, e, of this ellipse is given by e=c/a, while the length of the ellipse’s perimeter is \int_0^((\pi )/(2)) 4a(1-e^(2)sin^(2)\theta )^((1)/(2))d\theta . If 0 < e < 1, this integral cannot be integrated in terms of “well-known” functions. However, fnInt, may be used...

show that for some ring R, the equality a2−b2=(a−b)(a+b) holds ∀a,b∈R if and only if R is commutative.

show that for some ring R, the equality a^2−b^2=(a−b)(a+b) holds ∀a,b∈R if and only if R is commutative.

Let f: X→Y be a map with A1, A2⊂X and B1,B2⊂Y (A) Prove f(A1∪A2)=f(A1)∪f(A2). (B) Prove...

Let f: X→Y be a map with A1, A2⊂X and B1,B2⊂Y (A) Prove f(A1∪A2)=f(A1)∪f(A2). (B) Prove f(A1∩A2)⊂f(A1)∩f(A2). Give an example in which equality fails. (C) Prove f−1(B1∪B2)=f−1(B1)∪f−1(B2), where f−1(B)={x∈X: f(x)∈B}. (D) Prove f−1(B1∩B2)=f−1(B1)∩f−1(B2). (E) Prove f−1(Y∖B1)=X∖f−1(B1). (Abstract Algebra)

1. The heats of formation of CO2(g) and H2O(l) are -394 and -285.8 kJ/mole, respectively. Using...

1. The heats of formation of CO2(g) and H2O(l) are -394 and -285.8 kJ/mole, respectively. Using the data for the following combustion reaction, calculate the heat of formation of C3H4(g). C3H4(g) + 4 O2(g) -> 3 CO2(g) + 2 H2O(l) DHo = -1,939.1 kJ 2. A 10.0 gram sample of CaO is dissolved in water in a calorimeter whose specific heat capacity is 4.37 kJ/K. The temperature decreases 2.70 K. Calculate the DHo for the following reaction. CaO(s) +...

Gene A has two alleles, A1 and A2. Gene B has two alleles, B1 and B2....

Gene A has two alleles, A1 and A2. Gene B has two alleles, B1 and B2. In a population, the following haplotypes are observed. A1B1 = 0.2, A2B2 = 0.45, A1B2 = 0.15, and A2B1 = 0.2. Calculate the extent of linkage disequilibrium, D.