Chemistry, 24.02.2021 19:50 KayleighMorganhopkin
How does the concept of conservation of mass apply to chemical reactions?
Group of answer choices
The reactants and products have exactly the same atoms.
The reactants and products have exactly the same molecules.
The change in the amount of matter is equal to the change in energy
The change in the amount of matter is only a small percentage of the total mass
Answers: 1
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 21:30
An atomic nucleus is composed ofa)protons.b)protons and neutrons.c)protons and electrons.d)protons, neutrons, and electrons.
Answers: 1
How does the concept of conservation of mass apply to chemical reactions?
Group of answer choices
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