External = R
Internal = r
Volume of hemisperical = 2/3 π(R³-r³)
V= 2/3 π(9.1³ - 8.4³)
V= 336.9 cm³
Pure substances can be elements made up exclusively of one kind of atom, or they can be compounds made up of molecules that include two or more elements. Mixtures can be homogeneous or heterogeneous depending on how finely mixed the components are.
Answer:
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Explanation:
mmmmmmmmmmmmmmmmmmmmmmm pay attention in class kid
Answer:D increase in frequency
Explanation:
Peer review is important because it is used by scientists to decided which results should be published in a scientific journal
