La catodul unei băi electrolitice prin care circulă un curent electric cu intensita- tea de 2,5 A în 50 min. s-au depus 4,65 g de cositor. Să se determine:
a) echivalentul electrochimic al cositorului;

b) intervalul de timp în care la catod s-ar depune 8,37 g de cositor la o intensitate
a curentului prin baie egală cu 7,5 A.

Apatient has a history of poor nutrition. he has skin rashes, bleeding gums, and a cut that hasn’t healed in a long time. what vitamin deficiency most likely caused this symptom?

Give an example of a collision in real life. use the law of conservation of energy to describe the transfer of momentum. be sure and discuss the momentum before and after the collision occurs. you will need at least 3 sentences to thoroughly answer this question.

Refrigerant-134a flows through a carnot heat pump cycle at 0.5 kg/s. it is known that the maximum absolute temperature in the cycle is 1.1 times the minimum absolute temperature, and the net power input to the cycle is 2.5 kw. if the refrigerant changes from a saturated vapor to a saturated liquid during the heat rejection process, determine the maximum magnitude of the enthalpy of vaporization for this process in kj/kg (with 3 significant figures).