Una dieta normal de una persona es de 2100 kcal. ¿A cuántos Joules equivale este valor energético?

in English; A person's normal diet is 2100 kcal. How many Joules is this energy value equivalent to?

How do you tell if someone actually cares about you? and just say they do?

Imagine you are standing in the antarctic during the southern hemisphere summer. the sky is clear and blue. there are no clouds in the sky. your shadow is cast on the icy ground. what is the color of the shadow?

Which of the following bonds would be most polar? a. c-i b. c-br c. c-cl d. c-f e. c-o