Để trung hòa 300 ml dung dịch có pH = 1 (chứa đồng thời HCl, HBr, HNO3 cùng nồng độ mol/l) cần dung dịch chứa 1,14 gam hh NaOH và Ca(OH)2 thu được dung dịch X. Khối lượng muối khan có trong X bằng

2h2o2--> 2h2o + o2

this reaction is of the spontaneous decomposition of hydrogen peroxide down into water and oxygen.

add 2 molecules of hydrogen peroxide and 2 molecules of water. since oxygen is naturally diatomic, the total number of atoms of each element is now the same on both sides of the equation so it is balanced.

this may not be entirely correct but let me know.

they are made of gases.

they have a spherical shape.

they make energy through fusion.

your answer would be “dry”