En un dispositivo cilindro-émbolo, se tiene agua inicialmente como vapor saturado a 1,5 bar. Se extrae 490 kJ/kg de calor a presión constante hasta que su volumen específico llega a 0,907 m3/kg. Posteriormente, se le suministra calor a volumen constante hasta que la presión alcanza los 3 bar. Suponiendo que es posible despreciar variaciones de energía mecánica: a. Escriba el balance energético para este sistema cerrado.
b. Identifique las propiedades termodinámicas v y u para cada uno de los tres estados.
c. Calcule el trabajo, calor y variación de energía interna (por unidad de masa) para los procesos 1-2, 2-3.

the answer would most likely be c, because if it's a comical piece of information, it may likely not be true, if it's a site that allows anybody to edit the content, it could mean a five year old is typing the info, and if it's a tv show produced by a celeb, it may have a biased opinion.

it is given that trillions of microbes make up to 1% to 3% of the body mass.

let's take average of this percentage: 2%

consider the average mass of the human body as 70 kg.

then, trillions of microbes would have mass  

therefore, 100 trillion micro-organisms would weigh:

this is an approximate value and could change depending on the mass of the human body and percentage of the microbes present in it.

average mass per microorganism =

you can cut your hand off if your not