Calculate the mole number in 57.6 g of Ti2O3. (Ti=48, O=16) 3. What is the mole number of 196 g Cr2(SO4)3? (Cr=52, S=32, O=16)
4. 1.5 mol of compound Mg3X2 has mass 150 g. What is the atomic mass of element X? (Mg=24)
5. 0.15 mol of compound Ca3(XO4)2 has mass 59.7 g. What is the atomic mass of element X in the compound? (Ca=40, O=16)
срочно нужно!!!!!!!!
4. 1.5 mol of compound Mg3X2 has mass 150 g. What is the atomic mass of element X? (Mg=24)
5. 0.15 mol of compound Ca3(XO4)2 has mass 59.7 g. What is the atomic mass of element X in the compound? (Ca=40, O=16)
срочно нужно!!!!!!!!
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