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How to solve part b?
Sorry. I didn't notice at that time and thanks.Hi, firstly this is a physics forum and your question is chemistry-related. Please be mindful henceforth
As to your question, it's quite a memory based answer. You need to know that MgCl2 dissolves in water to give Mg(OH)2+HCl; Since one product is basic and the other is acidic, your best guess is pH 7.
in case of MgO, you need to know that it hardly dissolves/is slightly soluble. It is more of a surface reaction that occurs in which Mg(OH)2 is produced. As a result, you predict a high pH. Dont go till 14, Mg(OH)2 is not as strong of an alkali.
View attachment 65219 Can someone please help me solve this problem?
Explanation for X:View attachment 65229
Can someone please help me solve this problem?
Consider the weight of a column of air of cross-sectional area A and height h stretching from sea level to the edge of the atmosphere.Can anyone help me with this?? "B"View attachment 65228
Thankss! 😊😊go to
A positively charged oil droplet falls in air in a uniform electric field that is vertically upwards. The droplet has a constant terminal speed v0 and the electric field strength is E.
Physics Reference - A-Level 9702, Past Exam Paper Solutions ..physics-ref.blogspot.com
A small charge q is placed in the electric field of a large charge Q.
Both charges experience a force F.
What is the electric field strength of the charge Q at the position of the charge q?
A) F/(Qq)
B) F/Q
C) FqQ
D) F/q
Answer is D, why isn't it B? :O HELP
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