What kind of salt is included in chemical experiments, and you know how much you want.

Including many kinds, like carbonates, sodium salts, potassium salts, hydrochlorides, sulfates, nitrates.

Barium chloride baci2

Silver chloride AGCI

Calcium chloride Caci2

Potassium chloride KCI

Sodium chloride NaCl, sodium carbonate Na2CO3, sodium bicarbonate NaHCO3, potassium carbonate K2CO3, calcium carbonate CaCO3,

Barium carbonate baCO3,

Copper carbonate CuCO3,

Ferrous carbonate Fe2(CO3)3,

Silver carbonate Ag2CO3,

Sodium sulfate NaSO4,

Potassium sulfate K2SO4,

Barium sulfate baso4,

Silver sulphate agso4,

Calcium sulfate caso4

Aluminum sulfate AI2(SO4)3,

Zinc sulfate zeso4,

Sodium sulfate Na2SO4,

Silver nitrate agno3,

Barium nitrate ba(NO3)2,

Copper nitrate Cu(NO3)2,

Ferrous nitrate Fe(NO3)2,

Ferric nitrate Fe(NO3)3,

Silver chloride AGCI

Copper chloride cuci2,

Barium chloride baci2

Calcium chloride Caci2

Aluminium chloride aici3,

Potassium chloride KCI

Sodium chloride NACI,

Ammonium chloride NH4CI,

Ammonium bicarbonate NH4HCO3,

Ammonium sulfate (NH4)SO4,

Ammonium nitrate NH4NO3,

Na2CO3 soda ash soda.

nahco3 baking soda.

caco3 marble limestone.

NaCl table salt.

CaCl CuSO4 AGCL AGNO3 also has eight precipitates.

These are all things that are now commonly used.

Potassium salts, sodium salts, silver salts, copper salts, nitrates, carbonates, ......Too much.

Answer: The salinity of the saline ridge made of brine is as follows:

Therefore, the answer is: pat it carefully

The original salt content is 4%*200=8g

Set salt xgx+8) Zhaoyan ruler (200+x) = 10%.

x=40 Lingchai 3g

In a brine with 40% salt, add 40 grams of salt and 100 grams of water.

First of all, we need to know how many grams of original brine there are. We can calculate it with the following formula: Mass of brine = Mass of salt Mass fraction of salt Mass fraction of salt = Mass of salt Mass of salt + mass of water) So, the original brine has:

The mass of the brine = 40 = 100 grams Then, we need to know how many grams of brine there are after adding. We can calculate it with the following formula: Mass of brine = mass of salt + mass of water So, after the addition of brine has:

Mass of brine = 40 + 100 + 100 = 240 g Finally, we need to know the salty stroke of the saline after adding it. We can calculate it with the following formula: Salinity Stroke = Residual Mass of Salt Mass of Salt Water So, the salty stroke of the added brine is:

Salinous Pawn = 40 + 40) 240 = 1 3 The answer is lead to destroy filial piety: the salty pawn of the added brine is.

Suppose the first type is taken x kilograms, and the second type is taken (100-x) kilograms.

Columnar sub. x + take the line of envy = 100 *

x=50 so take 50 kg each. Huh.

Solution: Set up a sedan chair Zheng Ju two kinds of salt each x, y thousand bushes noisy.

x y＝100

12%x 20%y＝16%×100

x Closed Bi 50

y＝50

First, electrolyzed saline.

Second, the conductivity of the solution.

3. Reaction with silver nitrate solution.

4. Electrolyzed salt (melted).

5. Salting out reaction: For example, table salt reacts with ammonium bicarbonate to produce sodium bicarbonate.

6. Evaporation and crystallization, purification of coarse salt.

Seventh, prepare a solution with a certain mass fraction.

1.The solution is prepared with table salt and reacts with the silver nitrate solution to form a white precipitate.

2.The solution is prepared with table salt, which can do the color reaction of sodium.

Fill the cup with ice cubes and place one end of the line over the ice. Try to sprinkle a small amount of salt on the ice cubes on the line. 10 Thread lift after 20 seconds.

Ice cubes are brought up. Where there is salt, the ice melts and becomes a puddle of water, in which the thread is buried. As the ice melts, the salinity drops, the water freezes, and the threads freeze into the ice.

Hydrogen and chlorine can be obtained by electrolysis of table brine.

Analysis: This statement is false; The reasons are:

At this time, the salt content of the brine is:

8÷（200+8）x100%≈

Not 4%. I'm glad to solve the above problems for you, I hope it will help you in your studies! 】≤

Question 1: Wrong Sugar content rate.

Day 2: Right.

Question 3: (If the question is complete) False.

Question 4: b