Question

Mr(CuCO3)= Mr(Fe2o3)= Mr(BaSO4)=

Answer 1

Ответ:

Mr(CuCO3)= 64+12+16×3= 124 г/моль

Mr(Fe2O3)= 56×2+16×3= 160 г/моль

Mr(BaSO4)=137+32+16×4= 233 г/моль

Answer 2

The given values appear to represent the molar masses (molecular weights) of different chemical compounds:

• Mr(CuCO3): Molar mass of copper(II) carbonate (CuCO3)
• Mr(Fe2O3): Molar mass of iron(III) oxide (Fe2O3)
• Mr(BaSO4): Molar mass of barium sulfate (BaSO4)

As of my last update in September 2021, here are the approximate molar masses of these compounds:

• Mr(CuCO3) ≈ 123.6 g/mol (copper(II) carbonate)
• Mr(Fe2O3) ≈ 159.7 g/mol (iron(III) oxide)
• Mr(BaSO4) ≈ 233.4 g/mol (barium sulfate)

Please note that these values are approximate and rounded to one decimal place. It's always a good practice to verify the most accurate and up-to-date molar masses from a reliable source, especially if precise calculations are necessary.