Saved Bookmarks
| 1. |
1.Whal do you e B U12. What is green chemistry? How will i helpecrcase entQ13.Chlorophvil, the green colouriny, material of piut contains 2.68% ol tnagnesium bymass. Calculate the umber of moles of magnesiurn and atoms in 5.00 g oi thiscomplex. IAtomic mass ol Mg-24inud by the terms?Entropy |
|
Answer» Mass of chlorophyll = 5.0 gPercentage of Mg = 2.68 g2.68 x 2 0Mass of Mg in 5.0 g of chlorophyll = 2.69 x 5.0/100= 0.1345 g6.022 X {{10}^{23}} atoms of magnesium = 24 g.’. 24 g of Mg contains 6.022 X {{10}^{23}} atoms 0.1345 g of Mg contains 6.022 X ${{10}^{23}}$/24x 0.1345 = 3.73x {{10}^{21}} atoms |
|