Explanation:
1.) Sodium sulfur
1.2) Copper (||) chloride
1.3) Calcium oxide
1.4) Silver bromide
1.5) Zinc fluoride
1.6) Lithium nitride
1.7) Aluminum oxide
1.8) Magnesium bromide
1.9) Sulfur trioxide
1.10) Carbon dioxide
3. The answer is B. 11. This is because there are the same amount of electrons and protons in an atom, and since there are 11 protons, there are 11 electrons.
5. The formula H2O means that there are 2 hydrogen atoms (because the 2 is after the H), and 1 oxygen atom, so the answer is C.
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When the solution used begins to change color and stays the new color for at least 30 seconds we are able to tell that the solution has reached the end point of titration
A Wedge is made by placing two inclined planes back to back.
A Screw is made by wrapping an inclined plane around a cylinder.
<u>Explanation:</u>
- A wedge is an uncomplicated machine that consists of two sloping planes, providing it a thin end and thick end.
- A wedge is used to separate or split apart objects.
- Force is employed to the thick end of the wedge, and in turn, applies force to the object along both of its sloping sides.
- A screw is a simplistic machine that consists of an inclined plane wrapped around a cylinder or cone.
- The absolute mechanical benefit of wedges and screws is invariably higher than 1.
