Question

Применяя сведения об относительных атомных массах химических элементов, вычислите массовые отношения элементов в угольной кислоте, химическая формула которой H2CO3.

Answer 1

Mr(H2CO3) = 2+12+48 = 62
m(H):m(C):m(O) = 2:12:48 = 1:6:24
Исходя из массовых отношений, всего массовых частей в угольной (карбонатной) кислоте = 1+6+24=31. Это означает, что на 31 массовую часть кислоты приходится 1 массовая часть атомов водорода, 6 массовых частей атомов углерода и 24 массовых части атомов кислорода. 

Answer 2

Calculating the Mass Ratios in Carbonic Acid (H2CO3)

To calculate the mass ratios of elements in carbonic acid (H2CO3), we can use the relative atomic masses of the elements involved. The chemical formula for carbonic acid is H2CO3, which indicates that it contains hydrogen (H), carbon (C), and oxygen (O) atoms.

The relative atomic masses of these elements are as follows: - Hydrogen (H): 1.008 - Carbon (C): 12.011 - Oxygen (O): 15.999

To calculate the mass ratios, we need to determine the number of atoms of each element in the formula. In this case, there are 2 hydrogen atoms (H2), 1 carbon atom (C), and 3 oxygen atoms (O) in carbonic acid.

Using this information, we can calculate the mass ratios as follows:

- Hydrogen (H): - Mass ratio = (Relative atomic mass of hydrogen * Number of hydrogen atoms) / Total mass of the compound - Mass ratio = (1.008 * 2) / (2.016 + 12.011 + (3 * 15.999)) - Mass ratio = 2.016 / 62.027 - Mass ratio ≈ 0.0325

- Carbon (C): - Mass ratio = (Relative atomic mass of carbon * Number of carbon atoms) / Total mass of the compound - Mass ratio = (12.011 * 1) / (2.016 + 12.011 + (3 * 15.999)) - Mass ratio = 12.011 / 62.027 - Mass ratio ≈ 0.1937

- Oxygen (O): - Mass ratio = (Relative atomic mass of oxygen * Number of oxygen atoms) / Total mass of the compound - Mass ratio = (15.999 * 3) / (2.016 + 12.011 + (3 * 15.999)) - Mass ratio = 47.997 / 62.027 - Mass ratio ≈ 0.7738

Therefore, the mass ratios of hydrogen, carbon, and oxygen in carbonic acid (H2CO3) are approximately: - Hydrogen (H): 0.0325 - Carbon (C): 0.1937 - Oxygen (O): 0.7738

Please note that these values are approximate and rounded for simplicity.