Be sure to answer all parts. Calculate the molecular or formula mass of each of the...

Question

Question

Be sure to answer all parts. Calculate the molecul

science chemistry

Answer 1

Answer #1

Calcium Carbonate CaCO₃

atomic weight of Ca = 40.078

atomic weight of C = 12.0107

atomic weight of three O = 3 x 15.9994 = 47.9982

Molar mass of CaCO3 = 40.078 + 12.0107 + 47.9982 = 100.0869 amu (atomic mass units)

Bromous acid HBrO₂ :

atomic weight of H = 1.00794

atomic weight of Br = 79.904

atomic weight of two O = 2 x 15.9994 = 31.9988

Molar mass of HBrO₂ = 1.00794 + 79.904 + 31.9988 = 112.903594 amu (atomic mass units)

Caffeine (C₈H₁₀N₄O₂)

atomic weight of eight C = 8 x 12.0107 = 96.0856

atomic weight of ten H = 10 x 1.00794 = 10.0794

atomic weight of four N = 4 x 14.0067 = 56.0268

atomic weight of two O = 2 x 15.9994 = 31.9988

Molar mass of CaCO3 = 96.0856 + 10.0794 + 56.0268 + 31.9988 =194.1906 amu (atomic mass units)

Answer 2

Similar Homework Help Questions

Be sure to answer all parts. Calculate the mass of each product formed when 683 g...

Be sure to answer all parts. Calculate the mass of each product formed when 683 g of silver sulfide reacts with excess hydrochloric acid: Ag2S(s)+HCaq) AgC+ H2S) unbalanced Mass of AgCl Mass of H2S:
Be sure to answer all parts. What are the empirical formula and empirical formula mass for...

Be sure to answer all parts. What are the empirical formula and empirical formula mass for C5H15O5 ? Empirical formula: Empirical formula mass: g/mol
Be sure to answer all parts. Repor Draw a complete structural formula for the following compounds....

Be sure to answer all parts. Repor Draw a complete structural formula for the following compounds. In a structural formula, all atoms and bonds are shown. Isobutyl alcohol draw structure

The molecular mass of propanoic acid is 75.1 amu . Calculate the molecular mass of methyl...

The molecular mass of propanoic acid is 75.1 amu . Calculate the molecular mass of methyl ethanoate, an isomer of propanoic acid. Express your answer with the appropriate units.
Be sure to answer all parts. Calculate the molarity of each of the following solutions. (a)...

Be sure to answer all parts. Calculate the molarity of each of the following solutions. (a) 6.79 g of methanol (CH3OH) in 1.50 × 102 mL of solution: ?mol/L (b) 8.54 g of calcium chloride (CaCl2) in 2.20 × 102 mL of solution: ?mol/L (c) 8.91 g of naphthalene (C10H8) in 85.2 mL of benzene solution: ?mol/L
Be sure to answer all parts. Calculate the number of cations and anions in each of...

Be sure to answer all parts. Calculate the number of cations and anions in each of the following compounds. Enter your answers in scientific notation. (a) 7.73 g of KBr: x 10 cations anions (b) 4.61 g of Na,so: anions (c) 6.16 g of Ca3(PO4)2: anions

Be sure to answer all parts. What molecular ions are expected for the following compound? (Be...

Be sure to answer all parts. What molecular ions are expected for the following compound? (Be sure to use the wnrounded atomic mass values in your calculations) Br 1-1 and 192.12 jo
Be sure to answer all parts. Give the name and formula for the acid derived from...

Be sure to answer all parts. Give the name and formula for the acid derived from the following anion: sulfate. Name: (select) (select) A Formula:
Be sure to answer all parts. Calculate the mass of each product formed when 76.99 g...

Be sure to answer all parts. Calculate the mass of each product formed when 76.99 g of diborane (B2H) reacts with excess water: B2H6(g) + H20() → H3BO3(s) + H2(g) unbalanced I Mass of H3BO3: Mass of H2:

Be sure to answer all parts. What is the mass in grams of each quantity of...

Be sure to answer all parts. What is the mass in grams of each quantity of lactic acid (C3H6O3, molar mass 90.08 g/mol), the compound responsible for the aching feeling of tired muscles during vigorous exercise? a. 8.5 × 1024 molecules × 10 g b. 6.93 × 1023 molecules