mun wie weight of 6.022 x 10- molecules of CaCO3. 19. From 200 mg of CO2, 10- molecules are removed. How many moles of CO2 are left? 1 Calculate the number of oxygen atoms and its weight in an anno

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( V ) molar mass of ( c 0,=449 ) lmol Amount of ( cos ) taken ( =200 mathrm{mg} ) [ begin{array}{l} text { int } begin{array}{c} 0+cdots+frac{0 cdot 29}{44} g ln 0 =4 cdot 55 times 10^{3} mathrm{m} 01 end{array} end{array} ] Number of molecules of ( mathrm{CO}_{2} ) remored

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