Acertain person had a brain that weighed 1.45 kg and contained 6.41 × 1010 cells. assuming that each cell was completely filled with water (density = 1.00 g/ml), calculate the length of one side of such a cell if it were a cube.

Weight of 6.41×1010 number of cells is 1.45 Kg i.e, 1.45× gm. So, Weight of 1 (one) number of cells is= gm = 0.2239 gm.

Assuming that each cell was completely filled with water, from density, Volume of 1 gm water is 1 ml, so volume of 0.2239 gm water is 0.2239 ml. That means, volume of each cell is 0.2239 ml= 0.2239× m³. If each cell is considered as cube, volume of cube=(length of each side of cube)³= 0.2239× m³.

So, length of each side of cube= ∛(0.2239×= 6.07× meter.

answer: e.   sour taste

explanation: acids are those substances which dissociates in water to give ions. as they dissociate to give ions, they act as electrolytes and thus are electrically conductive. acids are sour in taste. example: hcl

bases are those substances which dissociates in water to give ions or accepts ions. as they dissociate to give ions, they act as electrolytes and thus are electrically conductive. bases are bitter in taste. bases are slippery in nature.