During the combustion of 5.00 g of butane in the presence of oxygen, 4.01 g of carbon dioxide and 3.55 g of water is given off. how much oxygen was needed to totally combust the butane?

iron combines with 4.00 g of copper (11) nitrate to form 6.01 g of iron (i) nitrate and 0.400 g copper metal. how much iron did it take to convert the cu(no3)2?

Competition occurs between species when

Which element forms the basis of all organic organisms a carbon b oxygen c hydrogen d nitrogen

Which of the following is an example of competition a. the leaves of a tree prevent a small shrub from getting sunlight. three species of birds feed a different heights in the same tree. b. three species of birds feed at different heights in the same tree c. zebra and giraffe’s feed on different grassland plants d. cats living in two different homes eat the same brand of cat food.