1. The cell in this demonstration began mitosis with two chromosomes. How many chromosomes did it have at the end of mitosis? 2. Why must a cell make a copy of tis chromosomes before cell division?

3. What structure holds sister chromatids together?

Ibelieve it's celsius. hope this .

In any atom of any element, you will find protons and neutrons in the nucleus of any atom 

The answer to this question is a

The reaction 2kalsi3o8 + 2(h+ + hco3-) + h2o  →  al2si2o5(oh)4 + 2k+ + 2hco3- + 4sio2 shows that feldspar kalsi3o8 is chemically altered by hydrolysis to form chalky-looking clay mineral kaolinite al2si2o5(oh)4. the chemical breakdown of potassium feldspar due to exposure to acidic water results to the mineral binding with the water molecule to become kaolinite with silica and potassium and bicarbonate ions in solution.