2 моль ортофосфата двухвалентного металла на 564 г тяжелее 1 моль его оксида. Укажите формулу оксида.

  1. MgO
  2. SrO
  3. BaO
  4. CaO

📝 Detailed explanation

Me₃(PO₄)₂: M = 3x+190; MeO: M = x+16. 2(3x+190) − (x+16) = 564 → 6x+380−x−16=564 → 5x=200 → x=40 → Ca. CaO.
42 / 84 (50%)
Question 42 of 84
← Previous → Next Space — Show answer

🎯 Take a test on the topic «Основные понятия и законы химии»

This topic contains 84 questions. Test your knowledge!

🔐 Log in to take the test

📚 All tests by subject «Химия»

View all collections and topics in Химия

Go to subject →

Report an error

Answers are unavailable

This test collection is closed. To get full access, please purchase 🌟 premium

Contact by email