True.
Polyhedrons are closed figures which are bounded by polygons such as cube, prism, pyramids.
Non-polyhedrons are solid figure which have sides but are not polygons such as sphere, cone and cylinder.
Please see the attached figure for polyhedron:
Hence, the given statement is true i.e. other polyhedrons are present other than prisms and pyramids.
Answer:
A volumetric flask is lab glass or plasticware used to prepare a solution. It is used to make up a solution to a known volume. Volumetric flasks are used to measure volumes much more precisely than beakers or Erlenmeyer flasks.
Answer: Matter is everything
Explanation:
The dirt, seawater, and the plants all comprise various substances, therefore, making them a mixture of substances. The dirt is generally an amalgamation of various kinds of rocks and soil, the rocks and soils exhibit distinct compositions, comprising anything from life and dead matter.
The seawater majorly comprises salt and water, therefore, making it a mixture of some of the constituents. The plants exhibit all the kinds of chemicals in them, one of the most prevailing is the water, they are also considered as the natural storehouse of carbon, along with these the plants also possess various other components, therefore, making them a mixture of components.
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<span>Copper II Sulfate- Cu 2+ and a sulfate SO4 2- add together nicely to make CuSO4. </span>