If the dose requires that a total of 40 mg be given, then you take the ratio of the stock bottle (mg/mL) and solve for the total amount of mL that are needed by multiplying the amount of mL required (x):

Multiply by 5 on both sides to give:

Then solve for x:

Another, possibly quicker, way to solve would be to set up a proportion - one side the stock bottle ratio, and the other side the dosage requirements:

Cross multiply and you get:

And you would solve this the same way as above.
So
the patient should receive 9.091 mL of secobarbitol.
The linea alba is a fibrous structure that runs down the midline of the abdomen in humans and other vertebrates.
It means that he must apply first aid as soon as possible
but he must also be careful so as not to jeopardize the victim’s life. He has to do it fast but must know the
procedure so that he can both save and stabilize the victim’s life.
It mean that u can design a strength -training (or weight training ) program without knowing two term :rep and set )
Hope this help you