see question 1 atHow to sketch this velocity-time graph?
some help with kinematics graphsHow to sketch this velocity-time graph?
Can anyone explain this?
Hi, firstly this is a physics forum and your question is chemistry-related. Please be mindful henceforthHow 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.
To do that we need to use formula F=MA
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.
this can help you: