please who understands balancing equations in chemistry please ate you up for a zoom to explain indicate of you can help i will send the id​

Asample of radium-226 will decay 1/4 of its original amount after 3200years. what is the half-life of radium-226?

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 will most likely happen when two bromine atoms bond together?