Answers: 2
Chemistry, 21.06.2019 22:30
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
Answers: 1
Chemistry, 22.06.2019 18:30
When the chemicals iron sulfide (fes) and hydrochloric acid (hcl) are combined, bubbles appear from the mixture. 1. does the appearance of bubbles indicate a physical or chemical change? 2. why do the bubbles indicate this change? 3. what property is this?
Answers: 1
Chemistry, 22.06.2019 20:00
For the reaction c6h14(g) & longrightarrow; c6h6(g) + 4h2(g), δp(h2)/δt was found to be 2.5 x 10-2 atm/s, where δp(h2) is the change in pressure of hydrogen. determine δp(c6h14)/δt for this reaction at the same time.
Answers: 2
What did john dalton use to develop his theories...
Mathematics, 13.06.2021 08:20
Mathematics, 13.06.2021 08:20
Mathematics, 13.06.2021 08:20
Physics, 13.06.2021 08:20
Biology, 13.06.2021 08:20
Physics, 13.06.2021 08:20
Mathematics, 13.06.2021 08:20
Mathematics, 13.06.2021 08:20
Physics, 13.06.2021 08:30
Physics, 13.06.2021 08:30
Mathematics, 13.06.2021 08:30
Spanish, 13.06.2021 08:30
Mathematics, 13.06.2021 08:30