Để xác định hàm lượng NaCl có trong mẫu X người ta tiến hành cân chính xác 2,17g mẫu X. Hoà tan mẫu X vào nước thu được dung dịch Y. Sau đó dùng dung dịch AgNO3 dư để kết tủa hoàn toàn. Lọc lấy kết tủa rửa sạch rồi đem sấy thu được 2,42g. Tính hàm lượng % NaCl có trong mẫu X

Na chemical reaction, activation energy increases the of the reactants. this outcome causes the particles to collide, which results in the of new products.

Which of the following describes qualitative data? a) recording the temperature of a solid as it is warmed. b) noting the color of a solution as it is heated. c) measuring the volume of an object by water displacement. d) taking the mass of an object using a balance.

What is the difference between covalent bonds and ionic bonds? covalent bonds involve the sharing of electrons between atoms; ionic bonds involve the electrical attraction between charged atoms. covalent bonds involve the transfer of electrons between charged atoms; ionic bonds involve the sharing of electrons between atoms. covalent bonds involve the sharing of pairs of electrons between atoms; ionic bonds involve the sharing of single electrons between atoms. covalent bonds involve the sharing of electrons between atoms; ionic bonds involve the sharing of protons between charged atoms.