How do you measure the specific gravity of a powder?

Answer 1

It is a small glass bottle usually of 25 or 50 c.c. capacity with a slight conical neck. It is fitted with a ground glass stopper which has a fine bore along the whole length. When the bottle is completely filled with any liquid and the stopper is fitted to the mouth, the excess of the liquid flows out through the hole in the stopper. Thus, the inside volume of the bottle is always kept constant. This bottle is used to find out the specific gravity of a solid in the form of powder or small fragments, and of liquid also.

Let the weight of the empty bottle = W1 gm.

The weight of the bottle +powder put inside = W2 gm.

Weight of the powder = (W2-W1) gm.

Weight of the bottle + powder water to fill the rest of the bottle = W3 gm.

Now pour out all the contents of the bottle and fill it up with pure water taking care to remove any air bubbles from inside. Let the weight of the bottle when full of water =W4 gm.

Weight of an equal volume of water as that of the powder = (W4-W1) - (W3-W2) gm.

Hence Sp. Gr. =

Answer 2

How many oz in a water bottle?

1 bottle of water in a oz= 250 gm**

2 bottle of water in a oz= 500 gm

½ (half) a bottle of water = 125 gm

¼ (quarter) a bottle of water= 62.5 gm

⅛ a bottle of water in oz=31.25 gm