If 10.4 grams of hydrogen, H2, and 9.14 grams of oxygen, O2, are placed together in a container and allowed to react according to the equation, how many grams of water, H2O, would be produced by the reaction? 2H2 + O2 2H2O Show all work

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

What happens when an acid dissolves?

How does a hydroelectric power plant converts energy into energy.