Compound with ionic bonds:

Connection with covalent non-polar bond

The sequential number of the element indicates:

Substance belonging to the group of strong electrolytes:

Electronic formula of the sodium atom:

ertical groupings of elements that combine elements that are mostly similar in properties are called:

Number period:

The number of all isomers-acids of the substance of the composition C5H10O2

Sum of coefficients in the equation of interaction of silver and dilute nitric acid (no gas is formed )

In the scheme of transformations

Red color of blood due to

If 1.86 g of aniline is brominated, then at 80% yield, tribromaniline will be obtained (in g)

The mass of sodium required to produce 16.8 butane (n. u.) by the Wurtz reaction is equal to

For the detection of Fe2+ ions and Fe3+ is used:

If 134.4 l (n. u.) of hydrogen was released during dehydrogenation, the mass of cyclohexane consumed and benzene formed are equal

Hydrogen will displace metal from water at room temperature

If the temperature has decreased by 30 ° C, and the speed has decreased by 27 times, then the temperature coefficient is equal to

The mass fractions of carbon and hydrogen in the hydrocarbon are 92.31% and 7.96%,respectively. The density of its vapors in hydrogen is 39,the molecular formula of this hydrocarbon

The mass of ethanol, which is formed by hydrogenation of 22 g of acetaldenhyde

The homologues are as follows:

The largest value of electronegativity has

36.5 g of hydrochloric acid solution was used for complete conversion to a solution of 10.6 g of sodium carbonate. Mass fraction of the substance in the acid solution

Length≡C bond:

The physical properties of phosphorus oxide (V) do not include:

Monosaccharides include

Reacts with water under normal conditions:

Name of the alkanol, the structural formula of which is given below

As a result of the polycondensation reaction, the following can be formed:

Chlorine cannot react with

Splitting and isomerization of hydrocarbon molecules in the presence of catalysts at t= 500oC is:

The sulfur dioxide drained in the drying tower enters:

Dissolution of solid substances depends on:

Chemistry studies

From the above signs, oxygen can not be attributed to:

The number of protons in an atom is:

The process of splitting hydrocarbons contained in oil, to form hydrocarbons with fewer carbon atoms per molecule, is called

A bond can be formed between atoms with the same electronegativity:

No gas is released when hydrochloric acid reacts with:

Formula of hydrosulphuric acid:

Metal that is easily subjected to chemical corrosion:

Complex substances that consist of hydrogen atoms that can be replaced by metal ions, and an acidic residue:

Substances with an atomic crystal lattice:

The molar mass of oxygen O2 is (g/mol):

The quantity of the substance is indicated by:

The number of periods in the Periodic system of chemical elements of D. I. Mendeleev:

Covalent non-polar coupling is characteristic of:

Select the acid formula:

A covalent chemical bond is:

Emulsions include: