A hydrocarbon has a molar mass of 82. 1 g/mol. If the combustion of 0. 8300 g of this hydrocarbon produces 0. 9102 g h2o and 2. 668 g of co2, which is the molecular formula of hydrocarbon?.

The ancestors of horses possessed feet with five digits. over time, with the development of grasslands, the digits fused and formed hooves. what evolutionary advantage did this transformation serve? a. it allowed them to climb rocky surfaces with ease. b. it allowed them to graze better. c. it enabled them to run faster from predators. d. it let them see clearly through the grasslands. e. it made them taller.

Essay questions may also be referred to as a. talk questions c. hard questions b. explain questions d. think questions

Abacterium was found to contain a sequence of atcgggatcct in its genome. a few generations later, the sequence was found to be atcatcct. what type of mutation caused this change in the bacteria? a. duplication b. insertion c. inversion d. translocation