Answer:
magnesium
Explanation:
when you check from the periodic table, magnesium is in group 2 , period 3
The number of Ml of a 0.40 %w/v solution of ,nalorphine that must be injected to obtain a dose of 1.5 mg is calculated as below
since M/v% is mass of solute in grams per 100 ml
convert Mg to g
1 g = 1000 mg what about 1.5 mg =? grams
= 1.5 /1000 = 0.0015 grams
volume is therefore = 100 ( mass/ M/v%)
= 100 x( 0.0015/ 0.4) = 0.375 ML
Gallium is the metal that will be solid at room temperature but will melt in the hands when picked up. Gallium is the metal that has the property of melting at a temperature which is just above the room temperature. It is a very rare property of a metal.This property of the metal makes it totally unusable for making anything.
This is a metal that can only be used for doing certain
tricks for making people laugh and happy.
