1. which elements are known as d-block elements?
transition metals
alkali earth metals
halogens
alkali metals

Pbco3 –> pbo+ co2. how many liters of carbon dioxide gas is produced from the decomposition of 32 grams of lead (ll) carbonate?

Calculate the molar mass of aluminum oxide (al2o3). express your answer to four significant figures.

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.