1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Elena L [17]
3 years ago
14

Compound EX4 reacts with Y2 giving two products: EX Y and XY. Calculate the E- X bond enthalpy if the reaction liberates 243.6 k

J/mol and other bond enthalpies are:
Y-Y 109 kJ/mol,
X-Y 123.1 kJ/mol and
E-Y 290 kJ/mol.
a. 547.7 kJ/mol
b. 60.5 kJ/mol
c. 234.7 kJ/mol
d. 20.6 kJ/mol
e. 176.9 kJ/mol
Chemistry
1 answer:
djyliett [7]3 years ago
6 0

Answer:

Option B

Explanation:

From the question we are told that:

Equation

EX_4+Y_2->EX_3Y+XY

Bond enthalpies are:

 Y-Y 109 kJ/mol,

X-Y 123.1 kJ/mol  

E-Y 290 kJ/mol.

Generally the equation for the energy used to break E-X and Y-Y is mathematically given by

 E_2=109+x

Therefore

Total Energy Liberated is

 E_T=E_1+E_2

 E_T=413.1+109+x

 E_T=304.1-x

Since

  E_T+E_I

Therefore

 304.1-x=243.6

 x=60.5kJ/mol

Option B

You might be interested in
Based on the table, which city was in danger of flooding?
dalvyx [7]

Answer:

I think the answer is Toledo

8 0
3 years ago
What is the net force acting on a 3000g sled that accelerated at 5 m/s2 ?
user100 [1]

Answer:

<h2>15 N</h2>

Explanation:

The force acting on an object given it's mass and acceleration can be found by using the formula

force = mass × acceleration

From the question

3000 g = 3 kg

We have

net force = 3 × 5 = 15

We have the final answer as

<h3>15 N</h3>

Hope this helps you

5 0
2 years ago
PLS HELP
jek_recluse [69]

Answer:

D because the grass is eaten by the antelope and the antelope is eaten bu the lion

4 0
2 years ago
Read 2 more answers
For the reaction 3h2(g) + n2(g) 2nh3(g), kc = 9.0 at 350°c. calculate g° at 350°c.
miss Akunina [59]
When ΔG° is the change in Gibbs free energy

So according to ΔG° formula:

ΔG° =  - R*T*(㏑K)

here when K = [NH3]^2/[N2][H2]^3 = Kc 

and Kc = 9 

and when T is the temperature in Kelvin = 350 + 273 = 623 K

and R is the universal gas constant = 8.314 1/mol.K

So by substitution in ΔG° formula:

∴ ΔG° = - 8.314 1/ mol.K * 623 K *㏑(9)

           = - 4536 
4 0
3 years ago
What is the thinnest type of crust?
Trava [24]
The correct answer is oceanic crust, 80 km, Hope this helps let me know.
8 0
3 years ago
Other questions:
  • When writing the electron configuration for an element in the d block you have to remember to lower the energy level by 1. 
    15·1 answer
  • During which time interval was the motion faster?<br><br><br> I NEED HELP
    12·2 answers
  • At 60 °C the value of Kw is 9.5 x 10-14.
    9·1 answer
  • Why does increasing the concentration of reactants increase the reaction rate? A. Some of the reactants are likely to act as cat
    7·1 answer
  • Depicted below you will see the molecules COH2 and SO3 . Why is COH2 polar while SO3 isn’t?
    5·1 answer
  • The freezing point of pure water is 0.0°C. How many grams of ethylene glycol (C2H6O2) must be mixed in 100.0 g of water to lower
    10·1 answer
  • How many grams are in 0.535 moles of sodium bromide? (Please add work)
    13·1 answer
  • 3. The air today is approximately one-fifth
    5·1 answer
  • in the titration of naoh with vinegar, a student forgot to condition the buret, and it was wet with deionized water before filli
    10·1 answer
  • The size of early universe was...
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!