Acell is the pattern mantle material takes as it rises when heated, then moves laterally as it cools, and sinks once its density is great enough.

Convection cell

Explanation:

The convection current refers to the upward rising of the hot molten and less dense magma in the mantle. These currents are formed due to the heat supplied from the core of the earth. This upward movement of magma results in the movement of the lithospheric plates over the less dense viscous layer of the asthenosphere.

As the magma at the greater depth gets heated up, due to the increasing heat and pressure, it gets heated up and rises upward in the form of convection cells. As it rises upward, it cools and slowly moves laterally and eventually sinks after its density increases. This cycle repeats and forms the main mechanism for the plate tectonic movement.

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  1.the balanced   chemical equation is as below

cu +   2 ag(no)₃ → cu(no₃)₂   +2 ag

2.the   much silver   produced   is   50.9 g

step 1: find the   moles of cu

moles =   mass÷   molar mass

  from periodic table the molar mass of cu = 63.5 g/mol

moles is therefore = 15.00 g÷ 63.5 g/mol = 0.236   moles

step 2: use the mole ratio to determine the   moles of ag

from equation above   cu: ag   is 1: 2

therefore the moles of ag   =0.236   moles   x 2/1 =0.472   moles

step 3: find the mass   of ag

mass = moles x molar mass

from periodic table   the molar mass of ag =107.87 g/mol

mass   = 0.472   moles x 107.87 g/mol = 50.9 g

3.   the   much   silver   collected worth is   1.797 oz

  convert   50.9 g   to oz

that is   1 gram = 0.0353 oz

          50.9 grams =?   oz

by cross multiplication

={(50.9 grams x 0.0353 oz) / 1   gram}   =1.797 oz