<span>Unless there is a lunar eclipse, half of the moon is always lit by the sun. Sometimes we see the lit half dead on (full moon), sometimes side on (half moon) and sometimes we don't see any of the lit surface (new moon) - usually we see something in between.</span>
Answer:
Explained below.
Explanation:
In oil rigs, Sacrificial protection is the protection of the steel against corrosion by using magnesium block which is a more reactive metal. This means that steel which is to be protected from corrosion will be the cathode while magnesium block preventing it from corrosion will be the anode and as such the block will be the one to corrode instead.
The mechanism behind this sacrificial protection is that the steel pipe on the rig will be connected to the magnesium block through copper wires and then the magnesium block will donate its electrons to the steel thereby preventing it from rusting. Thus is a reversible reaction and as such, after the steel Iron undergoes oxidization by receiving electrons from the magnesium block, it will be immediately be reduced to iron as depicted in the equation below.
Mg⇌Mg^(2+) + 2e-
Fe^(2+) + 2e-⇌Fe
Molar mass Na2SO4 => 142.04 g/mol
Number of moles:
n = sample mass / molar mass
n = 151 / 142.04 => 1.063 moles
Mass of solvent in <span>kilograms :
</span>
1 kg = 1000 g
574 g / 1000 = 0.574 kg
Therefore:
b = n solute / m solvent
b = 1.063 / 0.547
b = 1.943 mol/kg
Explanation:
The periodic table of elements has a rich diverse number of elements. Every element on the table is arranged based on their atomic numbers into their respective groups and columns.
The coining of words from the table is done creatively by combining symbols of elements.
Here are some of the world list:
TaXEs , TeAcH ,TeAm , TeTaNUS , CoW,, CoVEr COY
learn more:
Periodic table brainly.com/question/2014634
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