Question

Рассчитать Mr (CO2)= (H3PO4)= (P2O5)= (CuSO4)= (ZnCl2)= (Al(OH)3)= (Fe(OH)3)= (Mg(NO3)2)= (Ca CO3)=

Answer 1

Пожалуйста, в общем как-то вот так

Answer 2

To calculate the molar mass (Mr) of chemical compounds, we need to sum up the atomic masses of all the atoms present in each compound. Here are the molar masses of the given compounds:

1. CO2 (Carbon Dioxide): Mr(CO2) = M(C) + 2 * M(O) Mr(CO2) = 12.01 g/mol + 2 * 16.00 g/mol Mr(CO2) = 12.01 g/mol + 32.00 g/mol Mr(CO2) = 44.01 g/mol

2. H3PO4 (Phosphoric Acid): Mr(H3PO4) = 3 * M(H) + M(P) + 4 * M(O) Mr(H3PO4) = 3 * 1.01 g/mol + 30.97 g/mol + 4 * 16.00 g/mol Mr(H3PO4) = 3.03 g/mol + 30.97 g/mol + 64.00 g/mol Mr(H3PO4) = 98.00 g/mol

3. P2O5 (Phosphorus Pentoxide): Mr(P2O5) = 2 * M(P) + 5 * M(O) Mr(P2O5) = 2 * 30.97 g/mol + 5 * 16.00 g/mol Mr(P2O5) = 61.94 g/mol + 80.00 g/mol Mr(P2O5) = 141.94 g/mol

4. CuSO4 (Copper(II) Sulfate): Mr(CuSO4) = M(Cu) + M(S) + 4 * M(O) Mr(CuSO4) = 63.55 g/mol + 32.06 g/mol + 4 * 16.00 g/mol Mr(CuSO4) = 63.55 g/mol + 32.06 g/mol + 64.00 g/mol Mr(CuSO4) = 159.61 g/mol

5. ZnCl2 (Zinc Chloride): Mr(ZnCl2) = M(Zn) + 2 * M(Cl) Mr(ZnCl2) = 65.38 g/mol + 2 * 35.45 g/mol Mr(ZnCl2) = 65.38 g/mol + 70.90 g/mol Mr(ZnCl2) = 136.28 g/mol

6. Al(OH)3 (Aluminum Hydroxide): Mr(Al(OH)3) = M(Al) + 3 * M(O) + 3 * M(H) Mr(Al(OH)3) = 26.98 g/mol + 3 * 16.00 g/mol + 3 * 1.01 g/mol Mr(Al(OH)3) = 26.98 g/mol + 48.00 g/mol + 3.03 g/mol Mr(Al(OH)3) = 78.01 g/mol

7. Fe(OH)3 (Iron(III) Hydroxide): Mr(Fe(OH)3) = M(Fe) + 3 * M(O) + 3 * M(H) Mr(Fe(OH)3) = 55.85 g/mol + 3 * 16.00 g/mol + 3 * 1.01 g/mol Mr(Fe(OH)3) = 55.85 g/mol + 48.00 g/mol + 3.03 g/mol Mr(Fe(OH)3) = 106.87 g/mol

8. Mg(NO3)2 (Magnesium Nitrate): Mr(Mg(NO3)2) = M(Mg) + 2 * M(N) + 6 * M(O) Mr(Mg(NO3)2) = 24.31 g/mol + 2 * 14.01 g/mol + 6 * 16.00 g/mol Mr(Mg(NO3)2) = 24.31 g/mol + 28.02 g/mol + 96.00 g/mol Mr(Mg(NO3)2) = 148.33 g/mol

9. CaCO3 (Calcium Carbonate): Mr(CaCO3) = M(Ca) + M(C) + 3 * M(O) Mr(CaCO3) = 40.08 g/mol + 12.01 g/mol + 3 * 16.00 g/mol Mr(CaCO3) = 40.08 g/mol + 12.01 g/mol + 48.00 g/mol Mr(CaCO3) = 100.09 g/mol

Please note that the values used above for atomic masses are based on the most common isotopes of the elements and are generally reported with two decimal places.