the answer is D. A magnesium atom donates two electrons to the fluorine atoms → Each fluorine atom accepts one of the electrons → The magnesium atom becomes a +2 ion → Each fluorine atom becomes a -1 ion
because magnesium only has 2 valence electrons, and it would be easier to lose electrons rather gain.
i just took the test, its right.
Answer:
Mid-Ocean Ridges
Explanation:
The mid-ocean ridges is an underwater mountain system formed by diverging oceanic plates.
- This mid - ocean ridge is one of the prominent land mass on the earth surface.
- At a diverging center, two tectonic plates are pulling apart from one another.
- This creates a space which allows for magma to rise up.
- The magma then crystallize to form an extensive ridge network known as the mid - oceanic ridge.
- The continental expression of the ridge can only be found in Iceland
The period is simply the inverse of the frequency, therefore:
T = 1 / f
T = 1 / 775 Hz
T = 0.001290 s → possible answer
T = 1.29 × 10⁻³ s → possible answer
T = 1.29 ms → possible answer
F=ma
m=F/a=95/0.8= 118.75kg
your friend is pretty heavy XD
