Indica cuál de las siguientes sustancias es mas ácida y alcalina respectivamente. Vinagre 2.4
Leche 6.5
Té 5.5
Cerveza 4.5
Saliva humana 7.4

Which of the following statements is not true? • a. covalent compounds have low melting and boiling points. • ob. covalent bonds between atoms of a compound are relatively weak compared to bonds between molecules. • c. covalent bonds occur between nonmetals. • d. covalent compounds are often gases or liquids.

When the water vapor cools it condenses select a number that represents his process on the

2pos suppose an object in free fall is dropped from a building. its starting velocity is 0 m/s. ignoring the effects of air resistance, what is the speed (in m/s) of the object after falling 3 seconds? give your answer as a positive decimal without units. answer here