Identify the following properties as being intensive (i) or extensive (e) of a substance b. the formula of salt c.25.g of pb (d).1.5 litters of kool-aid (e).mecury has a ratio of 13.8g/ml

18. use the activity series to predict whether the following synthesis reaction will occur. write the chemical equations for the reaction if it's predicted to occur. (s) + o2(g) -> *note: it is possible.*

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

7. what temperature is need to just dissolve 50 g of nh4cl in 75 g of water? '