3.- En las siguientes ecuaciones químicas, identifica ácidos, bases y especies conjugadas cuando corresponda. Además indica, cuál es la teoría empleada en cada caso. Para ello señala “Ácido de
Arrhenius”, “Ácido de Bronsted”, “Base de Lewis”, etc.
a. HNO 3(ac) + H 2 O (l) H 3 O + (ac) + NO 3(ac)

b. KOH (ac) K + (ac) + OH - (ac)

c. HClO 4 (ac) + H 2 O (l) H 3 O + (ac) + ClO 4 - (ac)

d. HF (ac) H + (ac) + F - (ac)

e. LiOH (ac) Li + (ac) + OH - (ac)

f. CH 3 COOH (ac) + NH 3(ac) CH 3 COO - (ac) + NH + 4(ac)

g. H 2 SO 4(ac) + H 2 O (l) HSO4 - (ac) + H 3 O + (ac)

h. AlCl 3(ac) + Cl - (ac) AlCl - 4(ac)​

What are the percent by mass of copper in penny lab

Melting and boiling are endothermic processes. this means that these processes absorb energy from their surroundings in order to occur. use this information and the data you collected in the phase change gizmo to describe what happens to the temperature of water when you boil it, then explain why this result occurs.

Nebulae are enormous clouds in outer space. they are made mostly of hydrogen gas, helium gas, and dust. some nebulae glow brightly, while others do not. the stars that people see are huge, bright balls of glowing gas. they are made mostly of hydrogen and helium. which statement correctly describes other ways in which nebulae and stars are different? a. stars can form inside a nebula but a nebula can never be produced by any star. b. a star always has a higher density than a nebula. c. stars can never form inside a nebula but a nebula can be produced by any star. d. a nebula always has a higher density than a star.