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From what i have researched , the difference is that pseudoephedrine HCI has 16% pseudoephedrine HCL. You can read more on the following website http:/www.dow.com/dowexcipients/resources/pseu.htm
The element that would have properties most similar to the new element would be an element that lies in the same group as the new element. Specifically, the element with the most similar properties will lie directly above or below that element in the group.
This element is selenium.
I consider that this similar element doesn't exist.
Methamphetamine is a molecule very similar to Pseudoephedrine. In pure form, it would be made up of a single type of molecule.
This element is selenium.
scientists are saying that element 112, currently called ununbium, will be similar to mercury.
Elements in the same family, or group, have similar physical and chemical properties.
It has similar properties to the element with proton number 20, which is calcium.
Not usually, but the closely similar element chlorine often is.
Probably not a good idea since Pseudoephedrine raises your blood pressure.
It is supposed that ununtrium is similar to thallium.