Question

Lactic acid is formed in our muscles when we are physically active and is responsible for...

Lactic acid is formed in our muscles when we are physically active and is responsible for muscle pain. An elemental analysis showed that this compound contains 40% mass of carbon (C), 6.71% mass of hydrogen (H) and 53.3% mass of oxygen (O). Determine the empirical formula and the molecular formula for lactic acid. (The molar mass of lactic acid is 90.08 g / mol) Please show all the steps and procidure.

0 0
Add a comment Improve this question Transcribed image text
Answer #1

53:3 Ratio of moles ciH: o he: 67: 533 to the 3:33 ; 6.7 : 3.33 dividing through by 3.33 » Lind: 16 i toto of on? : 2 1 so, t

Add a comment
Know the answer?
Add Answer to:
Lactic acid is formed in our muscles when we are physically active and is responsible for...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions
  • Lactic acid is produced upon physical activity. The percent composition of lactic acid is 40.0%C, 6.71%H,...

    Lactic acid is produced upon physical activity. The percent composition of lactic acid is 40.0%C, 6.71%H, and 53.3%O. a) Determine the empirical formula of lactic acid. b) If the molar mass of lactic acid is 90.08 g/mol, what is the molecular formula for this compound?

  • 3. Acrylic acid, used in the manufacture of some plastics, has the composition 50.0% C, 5.6%...

    3. Acrylic acid, used in the manufacture of some plastics, has the composition 50.0% C, 5.6% H, and 44.4% O by mass. What is the empirical formula? 4. Urea contains C, H, N, and O. A 2.54 gram sample of urea is found to contain 0.51 g carbon, 0.17 g of hydrogen, and 1.19 g of nitrogen. What is the empirical formula of urea? 5. Putrescine, a substance produced by decaying animals, is composed of 54.5 % carbon, 13.6% hydrogen,...

  • Methyl formate is a compound that is made up of 40.0% carbon, 6.70 % hydrogen, and...

    Methyl formate is a compound that is made up of 40.0% carbon, 6.70 % hydrogen, and 53.3 % oxygen by mass. Its molar mass is 60.05 g/mol. From this information, determine the empirical and molecular formulas of methyl formate. (a) First of all, if you are given “percent by mass” data, and you know that “percent” means “parts per hundred”, what might you assume? (b) Based on your assumption in part (a), calculate the lowest-whole-number ratio of moles of C,...

  • help #10-12 QUESTION 10 Write the chemical formula for the compound formed from Cr3+ and SO42-...

    help #10-12 QUESTION 10 Write the chemical formula for the compound formed from Cr3+ and SO42- Path: pWords:0 3 points QUESTION 11 What is the mass of one mole of copper (II) sulfate pentahydrate, CuSO4*SH2O 3 points QUESTION 12 A compound containing carbon and hydrogen contains 4.75 g of carbon and 0.80 g of hydrogen. The molar mass of the compound is about 28 g/mol What is the empirical formula of the compound? What is the molecular formula of the...

  • onent of protein called threonine has an approximate molar mass of 120 g/mole. If the percent...

    onent of protein called threonine has an approximate molar mass of 120 g/mole. If the percent sition is as follows, find the empirical and molecular formulas of threonine? C = 40.33%, H = 7.616%, O = 40.29% and N = 11.76% aethyllead, the "lead" additive in leaded gasoline, has a percent composition by mass of 64.06% Pb, 29.71 % C and 6.23% H. What is the empirical formula of tetraethyllead? A 50.51 g sample of a compound made from iron...

  • An organic acid is composed of carbon (58.80%), hydrogen (9.89%), and oxygen (31.33%). Its molar mass...

    An organic acid is composed of carbon (58.80%), hydrogen (9.89%), and oxygen (31.33%). Its molar mass is 102.13 g/mol. Determine the molecular formula of the compound.

  • 1. When 2.50 g of copper metal reacts with molecular oxygen, the copper oxide product of the reaction has a mass of...

    1. When 2.50 g of copper metal reacts with molecular oxygen, the copper oxide product of the reaction has a mass of 2.81 g. What is the empirical formula of the copper oxide product 2. When 10.8 g of silver was reacted with sulfur. 12.4 grams of product was produced there was only one product). What is the empirical formula of the product? 3. Lysine is a compound composed of carbon, hydrogen, nitrogen and oxygen. When 1.50 g of lysine is burned,...

  • please answer all my questions for me. thank you!! Use the References to access important values...

    please answer all my questions for me. thank you!! Use the References to access important values if needed Calculate the percentage composition for NO2. Mass percentage of nitrogen = Mass percentage of oxygen = Submit Answer Retry Entire Group 8 more group attempts remaining Reference! Use the References to access important value of needed for this question 53.95 gram sample of iron is heated in the presence of excess oxygen. A metal oxide is formed with a mass of 77.14...

  • 6. Sulfur dioxide from coal-fired power plants combines with water in the atmosphere to produce acid rain. What is the...

    6. Sulfur dioxide from coal-fired power plants combines with water in the atmosphere to produce acid rain. What is the product when one molecule of SO2 reacts with one molecule of water? A. two molecules of sulfurous acid D. one molecule of sulfuric acid B. one sulfate ion E. one molecule of sulfurous acid C. two sulfite ions 7. Identify the correct statement regarding the mole. A. A mole of oxygen gas contains 6.02 x 10 atoms B. A mole...

  • Additional Intelligent Tutoring Exercise 6.9 A 38.40 mg sample of an organic acid composed of just...

    Additional Intelligent Tutoring Exercise 6.9 A 38.40 mg sample of an organic acid composed of just carbon, hydrogen, and oxygen was burned in pure oxygen to give 37.54 mg CO2 and 7.684 mg H20 in a combustion analysis In a separate experiment, the molecular mass was determined to be 90 In a titration, 40,2 mg ofthe acid dissolved in 50 mL of ater required 14.2 mi·t·0525 NaOH for complete neutralization. Use these data to draw a reasonable Lewis structure for...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT