How many grams of oxygen are needed to react with excess methane in the following reaction, in order to produce 325 kJ of energy? CH4 + 2 O2 → CO2 + H2O H = -890.4 kJ

Write a paragraph at least 10 sentences explaining how rocks are used today in society

Which supports the idea that birds and butterflies both have wings but they do not have a common ancestor with wings? a. the wings are analogous structures that evolved differently and do not have a similar internal structure. b. the wings are homologous structures that evolved differently and do not have a similar internal structure. c. wings of birds are vestigial structures, but the wing structures of bats are not vestigial. d. wings of bats are vestigial structures, but the wing structures of birds are not vestigial

One does not belong why? ice, gold ,wood ,diamond and table salt