For two acids of equal concentration, the stronger acid has —
A. a higher concentration of hydroxide ions
B. a higher pH
C. a higher concentration of hydronium ions
D. a stronger bond

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

The empirical formula of a compound is ch2o and its mass is 120 amu/molecule, what is its formula?

What is the magnitude of the force of gravity between to 1000 kg cars which are separated by distance of 25. 0 km on an interstate highway? the force between the two cars will be what