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Anonymous users2024-02-07High school chemistry formulas are:Reaction of sulfur with sodium s+2na===na2s
Reaction of sulfur with oxygen s+o2===so2
Reaction of sulfur with hydrogen s+h2===h2s
Reaction of carbon with concentrated nitric acid c + 4 hno3 (concentrated) ==o2 4no2 2h2o reaction of nitric oxide with carbon monoxide 2 no+ 2co===n2 + 2CO2 <>
The reaction of carbon with concentrated nitric acid c + 4Hno3 (concentrated) ==CO2 4NO2 2H2O
Reaction of nitric oxide with carbon monoxide 2NO+2CO===N2+2CO2 Reaction of nitrogen oxide with oxygen 2NO+O2===2NO2 Reaction of nitrogen dioxide with water 3NO2+ H2O====2NHO3+ NOC2CO2 reaction of carbon monoxide with oxygen 2CO+O2===2CO2 Reaction of carbon dioxide with carbon CO2+C===2CO
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Anonymous users2024-02-06The formula for calculating the quantity (mol) of a substance:
The amount of the solute (mol) The amount of the substance concentration (mol l) The volume of the solution (l).
The formula for calculating the solution:
1) The mass of the concentrated solution The mass fraction of the solute of the concentrated solution The mass fraction of the dilute solution The mass fraction of the dilute solution solute (i.e., the mass of the solute does not change).
2) The mass of the concentrated solution The mass fraction of the solute of the concentrated solution The mass fraction of the dilute solution The mass fraction of the dilute solution solute (i.e., the mass of the solute does not change).
Chemical Equilibrium Calculation Formula:
1) Reversible reaction: the ratio of the amount of change of each substance to the ratio of the corresponding coefficient in the equation.
2) The equilibrium amount of reactants, the starting amount, and the consumption. The balance of the product starts with the amount of increase.
The chemical equations are partially summarized.
1. Sulfate ion test: BaCl2 + Na2SO4 = BaSO4 + 2NaCl
2. Detection of carbonate ions: CaCl2 +Na2CO3=CaCO3 +2NaCl
3. Sodium carbonate reacts with hydrochloric acid: Na2CO3 + 2HCl = 2NaCl + H2O + CO2
4. Charcoal reduction copper oxide: 2CuO + C high temperature 2Cu + CO2
5. Iron sheet reacts with copper sulfate solution: Fe + CuSO4 = FeSO4 + Cu
6. Calcium chloride reacts with sodium carbonate solution: CaCl2 + Na2CO3 = CaCO3 + 2NaCl
7. Sodium burns in air: 2Na + O2 Na2O2 Sodium reacts with oxygen: 4Na + O2 = 2Na2O
8. Sodium peroxide reacts with water: 2Na2O2 + 2H2O = 4NaOH + O2
9. Sodium peroxide reacts with carbon dioxide: 2Na2O2 + 2CO2 = 2Na2CO3 + O2
10. Sodium reaction with water: 2Na + 2H2O = 2NaOH + H2
The equation in your book must be like this: 2h2(g) +o2(g) = 2h2o(l), right? >>>More
In this reaction, there is only the electron gain and loss of nitrogen element, the valency has risen and decreased, so C is wrong, the increase of nitrogen in metadimethylhydrazine is oxidized, it is a reducing agent, so a is wrong, the reaction is the recombination of atoms, so there is an endothermic and exothermic process, C is wrong, D is left, of course, there are eight electrons transferred from two N2O4 to N2 D is correct.
It doesn't seem to be a contradiction. The structure of the electron layer is the same, which means that it is the same three-layer and the same four-layer ......For example, Na and Cl, the radius of Cl is much smaller. >>>More
Color reaction: The color of a chemical is changed by a change in the chemical (new substances are generated). Nitric acid reacts with proteins and can make them yellow. >>>More
There are two main factors that affect the radius: one is the number of electrons outside the nucleus (generally speaking, the more electrons there are, the farther away from the nucleus, the larger the radius). >>>More