Which solution would have the lowest freezing point?
A.
1 mole of NaCl dissolved in 500 g of water
B. 1 mole of NaCl dissolved in 1,000 g of water
C. 0.5 mole of NaCl dissolved in 500 g of water
D. 0.5 mole of NaCl dissolved in 1,000 g of
water

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

An experimental procedure requires a 10 ml of acid to be dissolved

Select the correct location on the image identify the element that humans need to breathe. 2015 er r ights reserved