Question

H2Sio относительная молекулярная масса вещества равна сколько?

Answer 1

Mr(H2SiO3)=1*2+28+16*3=30+48=78

Answer 2

H2SiO is the chemical formula for disilicon trioxide, which is a compound composed of two silicon atoms (Si) and one oxygen atom (O). To calculate its relative molecular mass, we need to determine the atomic masses of the constituent elements and then sum them up.

The atomic masses (approximately) are as follows:

• Hydrogen (H) = 1.01
• Silicon (Si) = 28.09
• Oxygen (O) = 16.00

Now, to calculate the relative molecular mass (also known as molar mass or molecular weight), we add up the atomic masses of all the atoms in the compound:

Relative molecular mass of H2SiO = (2 * Atomic mass of H) + (1 * Atomic mass of Si) + (1 * Atomic mass of O) Relative molecular mass of H2SiO = (2 * 1.01) + (1 * 28.09) + (1 * 16.00) Relative molecular mass of H2SiO = 2.02 + 28.09 + 16.00 Relative molecular mass of H2SiO = 46.11

Therefore, the relative molecular mass of disilicon trioxide (H2SiO) is approximately 46.11 g/mol.