2. Uma massa de 80 g de NaOH foi dissolvida em 234 g de água. Sabendo o número de mol do NaOH é 2 eo número de mol da água é 13, a fração em quantidade de
matéria do NaOH e da Agua nessa solução é, respectivamente: (Use a equação
para calcular a fração molar):

Iknow the answer to 13 is b and 14 is d. i just need to know why the correct answers are correct

The diagram shows the structures of horse and cat forelimbs. what does the diagram suggest about the evolutionary relationship between these two mammals? a. they have homologous structures, indicating a common ancestor. b. they have analogous structures, indicating a common ancestor. c. they have homologous structures, indicating that they do not have a common ancestor. d. they have analogous structures, indicating that they do not have a common ancestor.

What is the difference between a substance "getting wet" and "being dissolved" in a liquid at the particulate level?