in face we calculate around 60 bricks.. but behind the wall there are double bricks in of footer brick... so calculate the footer brick as a double...
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The square pyramidal's bond angkle is 95 degrees hgjhgyuthvjyy,kufgy
The molecular geometry is square planar and the bond angle is 90 degrees
It is square planar, please see related link. (bond angle Kr-F is 90 degrees)
First, find the square footage of an 18" x 18" tile. 18 x 18 = 324 square inches. There are 144 square inches in a square foot (12" x 12" = 144). So divide 324 by 144 to get the square feet per tile. 324 / 144 = 2.25 sq ft per tile. You have 1800 square feet, using tiles that are 2.25 sq ft each. 1800 / 2.25 = 800 tiles. Generally, you will want to add from 5% to 10% for waste, depending on your layout (is it one big room, or several smaller rooms with lots of cutting?) (are you doing a checkerboard pattern, running bond (brick), or diagonal?) and your skill level. If in doubt, add 10% to be safe. 800 tiles + 10% --- that's 800 x 1.1 = 880 tiles.
The lone pair - OH bond repulsion in water is greater than the OH bond- OH bond repulsion. In methane all of the bonds are the same so it has perfect tetrahedral symmetry. This is VSEPR theory