Which compound would react with HBr in a neutralization reaction?
HNO3, (аq)
H2O (l)
H3РO4 (аq)
Pb(OH)2, (s)

Brainliesttt me asap! the below reaction can be categorized as more than one type of reaction. which reactions are these, and what are the types of reactions?

Which of these conditions most likely produces an unstable isotope?

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