How many liters of gaseous h2 will be theoretically) generated at standard ambient conditions (p = 1 bar; t = 25°c) starting from 207.0 g of pb? justify your answer by including workings, calculations and units (hint: assume that pb is the limiting reagent and is totally consumed, i. e. the reaction is quantitative).

1. calculate the approximate enthalpy of the reaction in joules. estimate that 1.0 ml of vinegar has the same thermal mass as 1.0 ml of water. iqnore the thermal mass of th sodium bicarbonate. note: it takes about 4.2 joules () to change 1.0 gram (1.0ml) of water 1.0 c

8. what happens to matter during a chemical reaction

Ascientist wants to know how individual lions within a pride interact with each other in their own environment. to do this, the scientist sedates and tags all of the lions within a pride. then, he places several remotely-controlled video cameras near the lions' den and performs an observational field study. he collects continuous video footage over the span of one year, analyzes the video, and then forms conclusions based on his observations.