Question

5. Установіть вiдповiднiсть мiж хiмiчними формулами речовин (циф- рами) і їх відносними молекулярними масами (буквами). 1H-O A 34 5 32 В 18 Г 16 Д 2 20₂ 3H2 4H2O2​

Answer 1

Matching Chemical Formulas with Relative Molecular Masses:

To match the chemical formulas with their relative molecular masses, we can use the given information:

1H-O: The formula 1H-O represents one hydrogen atom (H) and one oxygen atom (O). The relative molecular mass of water (H2O) is 18 g/mol [[1]].

A: The formula A is not specified in the given information.

34: The number 34 does not correspond to a specific chemical formula or relative molecular mass in the given information.

5: The number 5 does not correspond to a specific chemical formula or relative molecular mass in the given information.

32: The number 32 does not correspond to a specific chemical formula or relative molecular mass in the given information.

В: The formula В is not specified in the given information.

18: The number 18 corresponds to the relative molecular mass of water (H2O) [[1]].

Г: The formula Г is not specified in the given information.

16: The number 16 corresponds to the relative molecular mass of oxygen (O2) [[2]].

Д: The formula Д is not specified in the given information.

2: The number 2 does not correspond to a specific chemical formula or relative molecular mass in the given information.

20₂: The formula 20₂ represents 20 oxygen atoms (O). The relative molecular mass of dioxygen (O2) is 32 g/mol, so the relative molecular mass of 20 oxygen atoms would be 20 times that, which is 640 g/mol [[2]].

3H2: The formula 3H2 represents three molecules of hydrogen gas (H2). The relative molecular mass of hydrogen gas is 2 g/mol, so the relative molecular mass of three molecules of hydrogen gas would be 3 times that, which is 6 g/mol [[3]].

4H2O2: The formula 4H2O2 represents four molecules of hydrogen peroxide (H2O2). The relative molecular mass of hydrogen peroxide is 34 g/mol, so the relative molecular mass of four molecules of hydrogen peroxide would be 4 times that, which is 136 g/mol [[4]].

Therefore, the matching between the chemical formulas and their relative molecular masses is as follows:

1H-O: 18 g/mol A: Not specified 34: Not specified 5: Not specified 32: Not specified В: Not specified Г: Not specified 18: 18 g/mol Д: Not specified 2: Not specified 20₂: 640 g/mol 3H2: 6 g/mol 4H2O2: 136 g/mol

Please note that the formulas A, В, Г, Д, 34, 5, 32, and 2 are not specified in the given information, so their corresponding relative molecular masses cannot be determined.