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.
Homework Answers
Add Answer to:
Lactic acid is formed in our muscles when we are physically
active and is responsible for...
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.
An organic acid is composed of carbon (62.04%), hydrogen (10.43%), and oxygen (27.55%). Its molar mass...
An organic acid is composed of carbon (62.04%), hydrogen (10.43%), and oxygen (27.55%). Its molar mass is 116.16 g/mol. Determine the molecular formula of the compound.
When 0.6943 g of a compound is subjected to combustion analysis it produced 1.471 g CO2...
When 0.6943 g of a compound is subjected to combustion analysis it produced 1.471 g CO2 and 0.391 g H2O. What is its empirical and molecular formula if its molar mass is 172 g/mol if the compound is composed of only carbon, hydrogen, and oxygen.
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...
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 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...
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...
Most questions answered within 3 hours.
-
Where is the error in this code sequence?
String s1 = "Hello";
String s2 = "ello";...
asked 10 months ago -
Financial data for Joel de Paris, Inc., for last year
follow:
Joel de Paris, Inc.
Balance...
asked 10 months ago -
Consider this reaction:
Al2(SO4)3 (aq)+ BaCl3
(aq) Al2Cl6 (aq)- +
3BaSO4(s) . What is the...
asked 10 months ago -
Suppose that Savneet is considering increasing her
recent random sample from 20 car rentals to 40...
asked 10 months ago -
Trucks arrive at an unloading terminal at an average rate of 120
per hour.
Trucks arrive...
asked 10 months ago -
Why are methanol and ethanol completely soluble in water while
octanol is not very little soluble....
asked 10 months ago -
A facilities manager at a university reads in a research report
that the mean amount of...
asked 10 months ago -
When the CuSO4 is rehydrated by adding water to the anhydrous
compound, is this an endothermic...
asked 10 months ago -
A ray of sunlight is passing from diamond into crown glass; the
angle of incidence is...
asked 10 months ago -
A block of mass 0.249 kg is placed on top of a light, vertical
spring of...
asked 10 months ago -
how do the kidneys compensate in the presences of acidosis
a) trigger hyperventilate
b) reserve acid...
asked 10 months ago -
Question 501 pts
The rental rate of capital to the firm increases. Which of the
following...
asked 10 months ago