Answer
It takes less energy for sodium to donate that one electron than it does to accept seven more electrons to fill the outer shell. If sodium loses an electron, it now has 11 protons, 11 neutrons, and only 10 electrons, leaving it with an overall charge of +1. It is now referred to as a sodium ion.
Explanation:
Answer:
can you help me with my chemistry?
Density for Cu: 8.96
g/ml <span>
Density for Ag: 10.5g/ml</span>
First set up an
equation: mass = density * volume <span>
8.96 * x + 10.5* (10.12 - x) = 105.0
The density of the Cu (8.96) times x (the amount of copper)
added to the density of Ag (10.5) times voume of silver (10.12 - the amount of
copper) should equal the total weight.
</span>
Solving for x:<span>
x = 0.818 mL
So
mass of copper = 8.96 * .818 = 7.33
<span>mass percent of copper = 7.33/105 * 100% = 6.98%</span></span>
A)Constant pumping from the heart which provides adequate pressure necessary to move the blood through the arteries and veins
B)Gravitational force