Question

1.відносна молекулярна маса сполуки карбону та гідрогену така ж як у сполуки кальцію з оксигеном.Відомо що в її молекулі міститься вісім атомів гідрогену установіть формулу 2.Елемент Х розміщений в головній підгрупі ІІІ групи й утворює сполуку з оксигену масова частка якого становить 25,5%.Назвіть елемент Х напишіть формулу сполуки.помогите пожалуйста​

Answer 1

Ответ:

M(C2HO) = 24+1+16 = 41

M(CxHyOz) = 90, n= M(CxHyOz)\M(C2HO) = 90\41 = 2

C4H2O2

CxHyOz

X:Y:Z = 48:2:16 = 24 : 1 : 8  

Объяснение:

Answer 2

Relative Molecular Mass of Carbon and Hydrogen Compound

The relative molecular mass of a compound is the sum of the atomic masses of all the atoms in its molecular formula. In this case, we are comparing the relative molecular mass of a compound containing carbon and hydrogen with a compound containing calcium and oxygen.

To determine the molecular formula of the compound containing carbon and hydrogen, we need to consider the given information: the relative molecular mass is the same as that of the compound containing calcium and oxygen, and the carbon and hydrogen compound contains eight hydrogen atoms.

Let's calculate the relative molecular mass of the compound containing calcium and oxygen first. The atomic masses of calcium (Ca) and oxygen (O) are 40.08 g/mol and 16.00 g/mol, respectively. Assuming the compound contains one calcium atom and one oxygen atom, the relative molecular mass would be:

Relative molecular mass = (1 * atomic mass of calcium) + (1 * atomic mass of oxygen) Relative molecular mass = (1 * 40.08 g/mol) + (1 * 16.00 g/mol) Relative molecular mass = 56.08 g/mol

Now, since the relative molecular mass of the carbon and hydrogen compound is the same, we can calculate the molecular mass of the compound using the given information that it contains eight hydrogen atoms. The atomic mass of hydrogen (H) is 1.01 g/mol. Assuming the compound contains one carbon atom and eight hydrogen atoms, the relative molecular mass would be:

Relative molecular mass = (1 * atomic mass of carbon) + (8 * atomic mass of hydrogen) Relative molecular mass = (1 * atomic mass of carbon) + (8 * 1.01 g/mol) Relative molecular mass = atomic mass of carbon + 8.08 g/mol

To find the molecular formula, we need to know the atomic mass of carbon. The atomic mass of carbon (C) is approximately 12.01 g/mol. Using this value, we can calculate the relative molecular mass of the carbon and hydrogen compound:

Relative molecular mass = 12.01 g/mol + 8.08 g/mol Relative molecular mass = 20.09 g/mol

Therefore, the relative molecular mass of the carbon and hydrogen compound is approximately 20.09 g/mol.

Note: It is important to verify the accuracy of the information provided. Please consult reliable sources to confirm the atomic masses and calculate the relative molecular mass accurately.