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Calculate ∆H for the reaction 2C(s) + H2(g) → C2H2(g) using the following data:
H_2(g) +1/2 O_(2(g))→H_2 O_((l)) ∆H=-286 kJ
C_((s))+O_(2(g))→〖CO〗_(2(g)) ∆H=-394 kJ
C_2 H_2(g) +5/2 O_(2(g))→2〖CO〗_(2(g))+H_2 O_((l)) ∆H=-1 300 kJ
Calculate the change in the internal energy of a piston expanding against a pressure of 0.75 atm 10.3 L to 22.4 L. In the process, 1 030 J of heat is absorbed.
Consider a 10.0-g CO2 as an ideal gas, expanding isothermally and reversibly from a volume of 4 L to 12 L at 303 K. What is the work done by CO2? Calculate q and ∆E.
Samples of aluminum and of iron, both 1 kg in mass, absorb 9.5 kJ. Which substance would yield a larger change in temperature? Consider the specific heat capacities of aluminum (0.89 J/g-K) and iron (0.45 J/g-K).
Q3: A network is given as 190.28.0.0/16. Eight subnets are to be created.
(a) What will be the CIDR network prefix?
(b) Express last subnet in dotted decimal notation with mask.
(c) What is the maximum number of hosts in each subnet?
(d) What is the address range for hosts in second subnet?
(e) What is the subnet broadcast address for the first subnet?(10 marks)
Calculate the amount of heat released by a given reaction, causing the temperature of 500 mL water (density = 1 g/mL) to increase by 278.35 K (5.2°C)
Q2: (a) Two 8 bit numbers in a hexadecimal are 05 and 06. Obtain the checksum. (5 marks )
(b) Explain in detail each field of IPv6 header. (5 marks)
Q1. (a) Find CRC code for message bits to be transmitted which is 11001110 with generator value 1011 known to receiver. (5 marks)
(b) Explain in detail Go-Back-N ARQ Protocol with timeline diagram. (5 marks)
3. The electric (E) and magnetic (H) field vectors in a medium are given by
𝑬 = 𝒊^ 20𝑐𝑜𝑠(𝜔𝑡 + 𝜋𝑦)𝑉/𝑚 , 𝑯 = 𝒌^ 20 𝑐𝑜𝑠(𝜔𝑡 + 𝜋𝑦)𝐴/𝑚
𝜂
Use Maxwell’s equations to determine η and ω. Assuming that for the medium 𝜀 = 36𝜀𝑜 ,
𝜇 = 𝜇𝑜 .
Create a logarithmic function in the form f(x) = loga(x + b) and find its inverse. Show all of your solution steps to earn full credit. Your answer must include:
- A logarithmic function with a base value for a and a constant value for b
- Steps showing how you found your function's inverse
- The inverse function stated in function notation, f -1(x)
Provide 2 graphs, one that is a one-to-one function and one that is not a one-to-one function. Justify each classification.
Which two of the three functions are inverses of one another? Explain how you verified that two functions are inverses of one another using composition of functions and show your math work.
f (x) = 3√ x- 4 ( imagine if the tip of the symbol went to the end at 4 )
g(x) = x3 − 4
h(x) = x3 + 4
