megankbrown5
22.01.2021 •
Chemistry
Xg 4Na + 15g 02 → 70g 2Na20
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Ответ:
43.125g
Explanation:4Na+ O2=2Na2O
Molar mass: 23. 32. 62. React.mass: 92.
Ответ:
B
atoms has no charge
but when it loses or gains electrons, it becomes an iom cos it would have a positive or negative charge