Answer:
Although you might think of a machine as complex system of gears, drive belts and and a motor, the definition physicists use is much simpler. A machine is simply a device that does work, and there are only six different types of simple machines. They include the lever, the pulley, the wheel and axle, the screw, the wedge and the inclined plane.
Explanation:
Answer:
b. mercury
Explanation:
Fishes and some other sea foods are are known to concentrate mercury in their bodies. Consumption of these products gradually accumulate mercury in the body over time.
More specifically, fishes like swordfish, king mackerel and shark are known to concentrate higher amount of mercury than other species of fishes. Hence, limiting their consumption will protect humans from mercury poisoning.
The correct option is b.
MM Zn(NO₃)₂ = 189.36 g/mol
mass 1 mol Zn(NO₃)₂ = 189.36 g
mass hydrate = 100 / 63.67 x 189.36 = 297.409 g
mass 1 mol hydrate = 297.409 g
MM hydrate = 297.409 g/mol
MM hydrate = MM Zn(NO₃)₂ + MM xH₂O
297.409 = 189.36 + x(18)
x = 6
Answer : The name of the compounds are,
= Copper(I)iodide
= Iron(III)oxide
= Cobalt(II)fluoride
= Iron(II)oxide
Explanation :
<u>Naming rules for the compounds :</u>
- write the cation name first then name the anion.
- If the cation is the transition metals with various charges, write the charge by using parenthesis and Roman numerals after the metal name.
- For mono-atomic anions, use suffix (-ide).
Answer: The metal is held together by the strong forces of attraction between the positive nuclei and the delocalized electrons (The Electron Sea Model.
Explanation: I hope that helped!
