Hòa tan 2,8g Fe bằng dung dịch HCl 2M vừa đủ tính thể tích H2 sinh ra ở đktc tính thể tích HCl cần dùng tính khối lượng muối tạo thành

What is the ph of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 m?

Given the following equation: 2a1 + 3mgcl2 --> 2alcl3 + 3mg how many moles of aluminum chloride are produced from 2.5 moles of magnesium chloride?

Suppose that some of the compound spilled out of the crucible after it was heated. would that cause the percent by mass of water in the compound determined by the experiment to be too low, too high, or unchanged? briefly explain your answer.