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mNa₃PO₄ = 3 * 23u + 31u + 4 * 16u = 69u + 31u + 64u =164u
b) fosforanu (V) baru Ba₃(PO₄)₂
mBa₃(PO₄)₂ = 3 *137u + 2 * 31u + 8 * 16u = 411u + 62u + 128u = 601u
c) fosforanu (V) glinu AlPO₄
m AlPO₄ = 27u + 31u + 4 * 16u = 27u + 31u + 64u = 122u
d) fosforanu (V) miedzi (II) Cu₃(PO₄)₂
mCu₃(PO₄)₂ = 3* 64u + 2 * 31u + 8 * 16u = 192u + 62u + 128u = 382u
e) fosforanu (V) żelaza (II) Fe₃(PO₄)₂
mFe₃(PO₄)₂ = 3* 56u + 2 * 31u + 8 * 16u = 168u + 62u + 128u = 358u
f) fosforanu (V) żelaza (III) FePO₄
mFePO₄ = 56u + 31u + 4 * 16u = 56u + 31u + 64u = 151u