If 85 g of NH4Cl reacts with 130 g of Ca(OH)2 according to the following reaction, what is the maximum mass of ammonia that can be formed? 2 NH4Cl + Ca(OH)2 CaCl2 + 2 NH3 + 2 H2O

Granite rock is light in color. which feature directly contributes to this color? the process that forms granite the amount of silica minerals in granite the shape of the grains found in granite the unique pattern formed by grains in granite

Which of the following types of rock would most likely contain a fossil? slate granite lava rock limestone

African penguins, which inhabit the coasts of southern africa, were classified as an endangered species in 2010. two significant threats to their survival are ecosystem damage from oil spills and overfishing by humans. overfishing depletes the food supply of african penguins. the best method to reduce the threat of overfishing would be to . the risk of oil spills could be reduced by increasing the use of , which should oil consumption. if an oil spill does occur, could be used to remove the oil so the ecosystem may more quickly recover.