Consider the balanced equation: N₂H₄ + 2 H₂O₂ → N₂ + 4 H₂O What are the mole ratios of hydrazine (N₂H₄) to hydrogen peroxide (H₂O₂) and hydrazine (N₂H₄) to water (H₂O)?

A. 1:2 and 1:4
B. 1:3 and 1:4
C. 1:2 and 3:5
D. 1:3 and 3:5

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

Calcium chloride +gold(1) oxide—>

Calculate the mass of silver needed to react with chlorine to produce 126g if silver chloride?