Q:Does the pencil core go into the baby's face to keep the skin tight?

One possible problem is that even if there is no breakage, but there may be residual graphite powder cartridge inside, more so, good after the wound will leave behind a black spot (a little like the indistinct).

Q:What is the ratio of the coated sand to the graphite powder?

General additives accounted for 0.1-0.5 of the original sand weight. Different demand, of course, the proportion is not the same, there is no fixed number.

Q:What is the ratio of the coated sand to the graphite powder? How to improve the refractoriness of precoated sand

Or change the sand species, change the high refractoriness sand species, this cost is relatively large.

Q:Two simple physical methods are used to identify iron powder and graphite powderHurry up, you need it urgently! Thank you

That's simple. Just use a magnet. Iron is stronger than graphite. Test the conductivity, or measure the density, because the two substances are black and the color doesn't work. I wish you progress in your studies

Q:Why is the battery electrolyte more potassium hydroxide and sodium hydroxide is less used?

When the ambient temperature is low, the potassium hydroxide solution is used at a density of 1.19 to 1.21 (15 DEG C).

Q:Is the graphite powder poisonous?

Qingdao Huatai graphite for you to answer, graphite powder itself is no poison, graphite powder is powder, a long time in the graphite powder prone to pneumoconiosis and other occupational diseases, work should bring masks, ventilation conditions, eat more fungus and so on to prevent,

Q:What's the conductivity of graphite powder, silver powder?

The resistivity of silver is about 1.6*10-8.M at room temperature

Q:How many kinds of lubricating graphite powder can be added to the car engine?

Graphite particles, such as sand, will not touch iron, nor oil, the dispersion is very good. Small enough graphite particles, even if the oil back to the oil pan, but also still exist between iron and iron (pressed, want to run, can not run away ah).

Q:What kinds of graphite powder has it? What's the function?

The graphite powder can be divided into colloidal graphite powder and graphite powder, both of which are graphite products, and the colloidal graphite powder is colloidal

Q:The principle of a graphite missile

When graphite sticks to point wires, numerous circuits are formed, but they are short circuited.So the circuit was broken.