determine the formula mass (molar mass)\ndetermine the formula mass of the following chemical compounds…

determine the formula mass (molar mass)\ndetermine the formula mass of the following chemical compounds. please show totals that were added together to receive points!!!!\n1. nacl \n2. h₂so₄ \n3. kno₃ \n4. cacl₂ \n5. c₂h₈ \n6. ba(oh)₂ \n7. nh₄br \n8. ca₃(po₄)₂ \n9. al₂(so₄)₃ \n10. mg(no₃)₂ \n11. cu(no₃)₂ \n12. kmno₄ \n13. h₂o₂ \n14. h₃po₄ \n15. (nh₄)₃po₄ \n16. fe₂o₃ \n17. nac₂h₃o₂ \n18. mg(c₂h₃o₂)₂ \n19. hg₂cl₂ \n20. k₂so₃

determine the formula mass (molar mass)\ndetermine the formula mass of the following chemical compounds. please show totals that were added together to receive points!!!!\n1. nacl \n2. h₂so₄ \n3. kno₃ \n4. cacl₂ \n5. c₂h₈ \n6. ba(oh)₂ \n7. nh₄br \n8. ca₃(po₄)₂ \n9. al₂(so₄)₃ \n10. mg(no₃)₂ \n11. cu(no₃)₂ \n12. kmno₄ \n13. h₂o₂ \n14. h₃po₄ \n15. (nh₄)₃po₄ \n16. fe₂o₃ \n17. nac₂h₃o₂ \n18. mg(c₂h₃o₂)₂ \n19. hg₂cl₂ \n20. k₂so₃

Answer

Explanation:

Step1: Recall atomic masses

Atomic mass of Na = 22.99 g/mol, Cl = 35.45 g/mol for NaCl.

Step2: Calculate formula mass of NaCl

$22.99+35.45 = 58.44$ g/mol.

Step3: Recall atomic masses for $H_2SO_4$

Atomic mass of H = 1.01 g/mol, S = 32.07 g/mol, O = 16.00 g/mol.

Step4: Calculate formula mass of $H_2SO_4$

$(2\times1.01)+32.07+(4\times16.00)=2.02 + 32.07+64.00 = 98.09$ g/mol.

Step5: Recall atomic masses for $KNO_3$

Atomic mass of K = 39.10 g/mol, N = 14.01 g/mol, O = 16.00 g/mol.

Step6: Calculate formula mass of $KNO_3$

$39.10+14.01+(3\times16.00)=39.10 + 14.01+48.00 = 101.11$ g/mol.

Step7: Recall atomic masses for $CaCl_2$

Atomic mass of Ca = 40.08 g/mol, Cl = 35.45 g/mol.

Step8: Calculate formula mass of $CaCl_2$

$40.08+(2\times35.45)=40.08 + 70.90 = 110.98$ g/mol.

Step9: Recall atomic masses for $C_2H_6$

Atomic mass of C = 12.01 g/mol, H = 1.01 g/mol.

Step10: Calculate formula mass of $C_2H_6$

$(2\times12.01)+(6\times1.01)=24.02+6.06 = 30.08$ g/mol.

Step11: Recall atomic masses for $Ba(OH)_2$

Atomic mass of Ba = 137.33 g/mol, O = 16.00 g/mol, H = 1.01 g/mol.

Step12: Calculate formula mass of $Ba(OH)_2$

$137.33+(2\times(16.00 + 1.01))=137.33+(2\times17.01)=137.33 + 34.02 = 171.35$ g/mol.

Step13: Recall atomic masses for $NH_4Br$

Atomic mass of N = 14.01 g/mol, H = 1.01 g/mol, Br = 79.90 g/mol.

Step14: Calculate formula mass of $NH_4Br$

$14.01+(4\times1.01)+79.90=14.01+4.04 + 79.90 = 97.95$ g/mol.

Step15: Recall atomic masses for $Ca_3(PO_4)_2$

Atomic mass of Ca = 40.08 g/mol, P = 30.97 g/mol, O = 16.00 g/mol.

Step16: Calculate formula mass of $Ca_3(PO_4)_2$

$(3\times40.08)+(2\times(30.97+(4\times16.00)))=120.24+(2\times(30.97 + 64.00))=120.24+(2\times94.97)=120.24 + 189.94 = 310.18$ g/mol.

Step17: Recall atomic masses for $Al_2(SO_4)_3$

Atomic mass of Al = 26.98 g/mol, S = 32.07 g/mol, O = 16.00 g/mol.

Step18: Calculate formula mass of $Al_2(SO_4)_3$

$(2\times26.98)+(3\times(32.07+(4\times16.00)))=53.96+(3\times(32.07 + 64.00))=53.96+(3\times96.07)=53.96 + 288.21 = 342.17$ g/mol.

Step19: Recall atomic masses for $Mg(NO_3)_2$

Atomic mass of Mg = 24.31 g/mol, N = 14.01 g/mol, O = 16.00 g/mol.

Step20: Calculate formula mass of $Mg(NO_3)_2$

$24.31+(2\times(14.01+(3\times16.00)))=24.31+(2\times(14.01 + 48.00))=24.31+(2\times62.01)=24.31 + 124.02 = 148.33$ g/mol.

Step21: Recall atomic masses for $Cu(NO_3)_2$

Atomic mass of Cu = 63.55 g/mol, N = 14.01 g/mol, O = 16.00 g/mol.

Step22: Calculate formula mass of $Cu(NO_3)_2$

$63.55+(2\times(14.01+(3\times16.00)))=63.55+(2\times(14.01 + 48.00))=63.55+(2\times62.01)=63.55 + 124.02 = 187.57$ g/mol.

Step23: Recall atomic masses for $KMnO_4$

Atomic mass of K = 39.10 g/mol, Mn = 54.94 g/mol, O = 16.00 g/mol.

Step24: Calculate formula mass of $KMnO_4$

$39.10+54.94+(4\times16.00)=39.10 + 54.94+64.00 = 158.04$ g/mol.

Step25: Recall atomic masses for $H_2O_2$

Atomic mass of H = 1.01 g/mol, O = 16.00 g/mol.

Step26: Calculate formula mass of $H_2O_2$

$(2\times1.01)+(2\times16.00)=2.02+32.00 = 34.02$ g/mol.

Step27: Recall atomic masses for $H_3PO_4$

Atomic mass of H = 1.01 g/mol, P = 30.97 g/mol, O = 16.00 g/mol.

Step28: Calculate formula mass of $H_3PO_4$

$(3\times1.01)+30.97+(4\times16.00)=3.03+30.97+64.00 = 98.00$ g/mol.

Step29: Recall atomic masses for $(NH_4)_3PO_4$

Atomic mass of N = 14.01 g/mol, H = 1.01 g/mol, P = 30.97 g/mol, O = 16.00 g/mol.

Step30: Calculate formula mass of $(NH_4)_3PO_4$

$(3\times(14.01+(4\times1.01)))+30.97+(4\times16.00)=(3\times(14.01 + 4.04))+30.97+64.00=(3\times18.05)+30.97+64.00 = 54.15+30.97+64.00 = 149.12$ g/mol.

Step31: Recall atomic masses for $Fe_2O_3$

Atomic mass of Fe = 55.85 g/mol, O = 16.00 g/mol.

Step32: Calculate formula mass of $Fe_2O_3$

$(2\times55.85)+(3\times16.00)=111.70+48.00 = 159.70$ g/mol.

Step33: Recall atomic masses for $NaC_2H_3O_2$

Atomic mass of Na = 22.99 g/mol, C = 12.01 g/mol, H = 1.01 g/mol, O = 16.00 g/mol.

Step34: Calculate formula mass of $NaC_2H_3O_2$

$22.99+(2\times12.01)+(3\times1.01)+(2\times16.00)=22.99+24.02+3.03+32.00 = 82.04$ g/mol.

Step35: Recall atomic masses for $Mg(C_2H_3O_2)_2$

Atomic mass of Mg = 24.31 g/mol, C = 12.01 g/mol, H = 1.01 g/mol, O = 16.00 g/mol.

Step36: Calculate formula mass of $Mg(C_2H_3O_2)_2$

$24.31+(2\times((2\times12.01)+(3\times1.01)+(2\times16.00)))=24.31+(2\times(24.02+3.03+32.00))=24.31+(2\times59.05)=24.31 + 118.10 = 142.41$ g/mol.

Step37: Recall atomic masses for $Hg_2Cl_2$

Atomic mass of Hg = 200.59 g/mol, Cl = 35.45 g/mol.

Step38: Calculate formula mass of $Hg_2Cl_2$

$(2\times200.59)+(2\times35.45)=401.18+70.90 = 472.08$ g/mol.

Step39: Recall atomic masses for $K_2SO_3$

Atomic mass of K = 39.10 g/mol, S = 32.07 g/mol, O = 16.00 g/mol.

Step40: Calculate formula mass of $K_2SO_3$

$(2\times39.10)+32.07+(3\times16.00)=78.20+32.07+48.00 = 158.27$ g/mol.

Answer:

  1. 58.44 g/mol
  2. 98.09 g/mol
  3. 101.11 g/mol
  4. 110.98 g/mol
  5. 30.08 g/mol
  6. 171.35 g/mol
  7. 97.95 g/mol
  8. 310.18 g/mol
  9. 342.17 g/mol
  10. 148.33 g/mol
  11. 187.57 g/mol
  12. 158.04 g/mol
  13. 34.02 g/mol
  14. 98.00 g/mol
  15. 149.12 g/mol
  16. 159.70 g/mol
  17. 82.04 g/mol
  18. 142.41 g/mol
  19. 472.08 g/mol
  20. 158.27 g/mol