In the passage just considered, the words “thus” and “given that” appear as indicator words. What kind of indicators are they? The universe has a beginning. Thus, the universe has a cause, given that anything with a beginning has a cause. That’s why I’m a believer.

3. When the following Friedel-Crafts alkylation was performed using chlorobutane, two products (product X and product Y) were isolated. Please determine the structures of product X and product Y based on 1H NMR analysis. Based on your proposed structures, please provide a mechanism on the following page to account for their formation. (20 pts)   MECHANISM:                      

Air flows into a turbine with a specific enthalpy of 1635.8 kJ/kg and exits with a specific enthalpy of 877.4 kJ/kg. What is the power output if the mass flow rate is 5 kg/s? (1 pts)

The piston/cylinder setup shown below contains 0.5 kg of ammonia at −20∘C with a quality of 25%. The ammonia is now heated to +20∘C, at which state the volume is observed to be 1.41 times the initial volume.  State 1: T1= -20 ∘C, P1 = 190.2 kPa, v1=0.15696 m3/kg, u1=391.44 kJ/kg State 2: T2= 20 ∘C, P2= 600 kPa, v2=0.2213 m3/kg, u2=1347.9 kJ/kg A.    Find the work the ammonia produced. (5 pts)B.    Find the heat transfer. (5 pts)   Please (1) do the calculations on paper, and (2) provide numerical answers here.

All engines that operate on the Carnot cycle between two given constant-temperature reservoirs have the same efficiency. True or False? (1 pts)

Setting: N/ASex: FemaleAge: 66 yearsPresenting Problem / Current Condition•     Underwent a right total knee arthroplasty 5 days ago, currently•     weight-bearing as tolerated•     Left knee has severe degenerative joint diseaseMedical History•     Hypertension•     Obesity•     Type 2 diabetesOther Information•     Lives in a two-story home alone•     Utilized a cane for upright mobility prior to surgery•     Difficulty ascending and descending stairs prior to surgeryPhysical Therapy Examination(s)•     Supine-to-sit transfer with Mod A•     Sit-to-stand transfer with Mod A•     Transfer from bed to chair with front-wheeled walker Min A•     Gait: 50 feet with front-wheeled walker Min A•     Right knee range of motion 10° to 76° Vital sign Before activity During activity Blood pressure 142/86 mm Hg 152/86 mm Hg Heart rate 82 bpm 155 bpm Oxygen saturation 95% 91% Physical Therapy Plan of Care:     •     Therapeutic exercise     •     Bed mobility training     •     Transfer training     •     Gait training     •     Modalities The patients change in vitals is ?  

The refrigerator in a kitchen receives an electrical input power of 145 W to drive the system, and it rejects 400 W to the kitchen air. Find the COP (Coefficient of Performance) of the refrigerator. (1 pts)

8. Identify products A through E in the reaction scheme below. (10 pts)  

What common condition is known as epistaxis?

The constant-pressure process needs less heat than the constant-volume process for the same amount of substance to increase the temperature by one degree. True or False? (1 pts)