kitttimothy55
17.11.2020 •
Chemistry
Drag the tiles to the correct boxes to complete the pairs.
Chromium is a transition metal, and oxygen has an oxidation number of 2. Use this information to match each compound to its chemical formula
chromium(VI) oxide
chromium(IV) oxide
chromium(III) oxide
chromium(II) oxide
Cro
Cro
>
Cro
Cr₂O,
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Ответ:
She first uses a straight edge to draw a diameter of the circle through the center.
Then, using a compass and straight edge, she constructs the perpendicular bisector of the diameter forming another diameter.
(These resulting four points on the circle are the vertices of the inscribed square.), hence, these points are joined in the next step using a straightedge.