Answer:
the mass of the copper piece is 110.2976 grams
There is no chemical equation to describe what happens when water evaporates because water changing its state/form is a physical change, not a chemical change. All that happens is that the water molecules separate from each other a little bit. A chemical equation requires something to react with another.
Explanation:
Given parameters:
Density of silver = 10.5g/cm³
Volume of silver given = 4mL
Unknown:
Mass of silver = ?
Solution:
Density of a substance can be expressed as its mass per unit volume
Density =
we need to convert our volume to cm³ from mL;
1cm³ = 1mL
So 4mL = 4cm³
input the values in;
Mass = density x volume = 10.5 x 4 = 42g
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Density brainly.com/question/8441651
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A. 2 positive charges
It is losing it's negative charge that made it neutral by losing 2 electrons, making it a positive ion