The way to write various chemical supplies, the accurate way to write several chemical equations

Acid , acid root written back (e.g. silver nitrate: agno3);

A is written as B, written as Ba (e.g. copper oxide: cuo);

Several hydrates, written: ·H2O (such as copper sulfate pentahydrate: CuSO4·5H2O) followed by attention to valence and atomic clusters. The valency should be added to zero, and the atomic group should not be disassembled when it is written, the atomic group has its own valency.

Remember the valency of each element and atomic cluster, and write it as the algebraic sum of the positive and negative valencies in the compound as zero. There are those who don't know, just ask.

School supplies made of chemical materials include: eraser heads, ballpoint pen holders, plastic rulers, correction fluids, etc

Medicine spoons, alcohol lamps, beakers, graduated cylinders or glue-tip droppers, or dispensing funnels.

The medicine spoon is used to distinguish medicines, and a small spoon is used to take MSG when stir-frying, so you can use a spoon instead of a small spoon; Alcohol lamps can be heated, and electric heaters are also used for heating, so alcohol lamps can be used instead of electric heaters; A beaker is a glass instrument that can be used to hold medicines or reaction vessels Our glasses are also glass products, similar in shape and texture to beakers, so glasses can be used instead of beakers; The syringe has a scale, which can measure the volume of the liquid, so it can replace the graduated cylinder; The syringe can be used to suck up or drop liquid, which is the same as the purpose of the dropper, so it can be used instead of a dropper; The syringe can control the amount of liquid added, and there is a switch on the separating funnel, which can also control the addition and addition progress of liquid drugs, so it can replace the dispensing funnel.

fe+h2so4=feso4+h2↑

2Fe 6H2SO4 (hot, concentrated) Fe2 (SO4)3 3SO2 6H2O

2Fe + 6Hno3 = 2Fe (NO3) + 3H2 Fe + 6Hno3 = Fe (NO3) 3 + 3 NO2 + 3H2O copper and concentrated sulfuric acid do not react.

cu+2h2so4=cuso4+so2↑+2h2o

1.Determine the product and the price of the reaction.

2.The valency is marked above the compound where there is a rise in valency.

3.Find out how much the price has risen and how much it has fallen in total, and then get the minimum common multiple, for example.

fe+h2so4=feso4+h2, no superscript, subscript, really can't write!

Soda ash (soda) Na2CO3, baking soda NaHCO3

Water H2O table salt NaCl

Glucose C6H12O6

Sucrose C12H22O11

Acetate CH3COOH

You say bai

It is the right to be a table of the Zhou Week.