Těleso z olova přijalo teplo o velikosti 77,4 kJ při zahřátí o 60 °C. Urči jeho hmotnost. /6 bodů/​

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?

The gun from the crime scene shows tool marks where the serial numbers are ground off. there are also tool marks on the bullets left behind. what information can the tool marks on the bullets and gun provide about the crime? what type of evidence does this information provide, individual or class?

During the past 150 years in the united states, how did energy consumption compare to population growth