It's nickel. Nickel is known to be capable of conducting electricity anywhere thanks to its properties which makes it solid even at room temperature. Unlike other elements such as mercury, which can be a good conductor, it doesn't have a solid state at higher degrees of temperature.
It's shows the relative age around them so they can guess as to the age of the metamorphic rock with out having to use carbon dating
Answer:
Theoretical yield is 10.0g of HF.
Explanation:
Theoretical yield is defined as the yield of a reaction assuming a 100%.
In the reaction:
SiF₄(s) + 2H₂O(l) → 4HF(aq) + SiO₂(s)
2 moles of water produce 4 moles of HF.
4.51g of H₂O are:
4.51g ₓ (1mol/18.02g) = 0.250moles of water. Moles of HF:
0.250moles H₂O ₓ (4mol HF/2mol H₂O) = 0.500mol HF
In grams:
0.500mol HF ₓ (20.01g / 1mol) = <em>10.0g of HF - theoretical yield-</em>
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I hope it helps!
Mass determines the force of gravity like this:
If an object weight a lot it will affect the mass and gravity pulls on the object lots more when an object has lots of weight/mass.
Example: An airplane. An airplane probably weighs a ton. That is why gravity pushes it down in order for the plane to go down when it is landing or else it would be flying but never coming down. But the gravity pulling down the airplane is still there so the airplane has to be pulling the steer up in order for it to be heading straight.
Glad to help! :)