PLEASE HELP Aluminum carbonate decomposes to produce aluminum oxide and carbon dioxide.
Al2(CO3)3 ---> Al2O3 + 3CO2
How many grams of aluminum carbonate is needed to give 4.5 g of carbon dioxide by this reaction?

Modern weaponry has increased the number of deaths in wars and violent conflicts.

6. using 3 – 4 sentences explain (in your own words) why water expands when it freezes? 7. using your knowledge of colligative properties explain whether sodium chloride or calcium chloride would be a more effective substance to melt the ice on a slick sidewalk. use 3 – 4 sentences in your explanation.

Asubstance is a good conductor of electricity which of the following best explains a probable position of the substance in a periodic table