Solve the following problems on molecular/empirical formula determinations:2. The hormone norephinephrine, which is released by the body when it is stressed, ismadeup of 56.8% H, 28.4% N. Determine its EF.3. An alcohol contains 64.81% C, 13.60% H, and 21.59% O. The molecular mass of thiscompound is 74 g/mol. Determine its EF and MF.4. A 0.545 g of Al burns completely in the presence of O, creating 1.030 g of the metaloxide.Find its EF.

Note: As per our guidelines, we are supposed to answer only one question when multiple questions are…

Answered: 2. The hormone norephinephrine, which…

2. The hormone norephinephrine, which is released by the body when it is stressed, is made up of 56.8% H, 28.4% N. Determine its EF.

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter3: Stoichiometry

Section: Chapter Questions

Problem 3ALQ: True or false? The atom with the largest subscript in a formula is die atom with the largest percent...

See similar textbooks

Related questions

Q: 2. How many grams of salicylic acid must be used in order to produce 5.00 grams of acetylsalicylic…

A: Given: Reaction yield = 92.0% Mass of aspirin = 5. 00 gram To find : mass of reactant…

Q: a. When 22.6 g of benzene and an excess of nitric acid are used, what is the theoretical yield of…

A: Reaction involved : C6H6(l)+HNO3(l)-----> C6H5NO2(l)+H2O(l) We have benzene and nitric acid as…

Q: Phthalonitrile (C₈H₄N₂) is produced by the ammoxidation of o-xylene (C₈H₁₀) according to the…

A: The balanced equation for the ammoxidation o-xylene is shown below : C8H10(l) + 3O2(g) + 2NH3(g) =…

Q: When the equation below is balanced, what is the coefficient in front of the oxygen? __ C4H8S2 +…

A: To solve this first we have to balanced the chemical equation . The equation will be balanced when…

Q: 2NaCl + H2SO4 → Na2SO4 + 2HCl Since the losses in the reaction are 2%, how much is needed than 90%…

A: Balanced equation : 2NaCl + H2SO4 → Na2SO4 + 2HCl 1 mol…

Q: How many moles of ammonia would be required to react exactly with 0.782 moles of copper() oxide in…

Q: Most of the commercial HCI is prepared by heating Nacl with concentrated H,SO.. How many pounds of…

A: Balanced equation of the reaction 2NaCl + H2SO4 ------> 2HCl + Na2SO4…

Q: Calculate the % CO2 considering the reaction of 2.500 g of KHCO3 with excess HCl. The reaction is…

A: The % CO2 produced is to be calculated considering the reaction of 2.500 g of KHCO3 with excess HCl.…

Q: What is the value of K1/2 for the following reaction? 2502(g) + O2(g) = 2503(g)

Q: Calculate the % CO2 considering the reaction of 2.500 g of Na2CO3 with excess HCl. The reaction is…

A: Given:Mass of Na2CO3 = 2.500 g.Chemical reaction is given by,Na2CO3 + 2HCl → H2O + CO2 + 2NaCl

Q: How many moles of phosphine are prepared from 5.00 moles of Ca3P2

A: The balanced reaction of formation of phosphine from Ca3P2 is given as

Q: How to balance N2H4 + N2O4= N2 + H2O when mol N2O4 is 2.5?

Q: Phthalonitrile (C₈H₄N₂) is produced by the ammoxidation of o-xylene (C₈H₁₀) according to the…

A: The balanced requation for given reaction is C8H10(l) + 3O2(g) + 2NH3 (g) → C8H4N2 (s) + 6H2O(l)

Q: 24.0gCaCl2how many moles of CaCl2how many moles Cl-?

A: The number of moles (n), mass (m) and molecular mass (M) of a sample ay be related as:

Q: H2O2 + KMno, + H2SO. - O: + MNSO, + K2SO4 +H2O How many moles of the oxidized product is formed in…

A: In the reaction, H₂O₂ + KMnO4 + H₂SO4 -----> O₂ + MnSO4 + K₂SO4+ H₂O How many moles of oxidised…

Q: Given 100 g-mol of molybdotellurate: 3(NH4)22TeO3.6MoO3.10H2O, calculate: a) kg molybdotellurate b)…

A: The given molybdotellurate is 3(NH4)2.2TeO3.6MoO3.10H2O The molecular weight of this substance =…

Q: 3Co, + 4H0 4. CH How many moles of oxygen are necessaty to react completely with tour moles of…

Q: If 56.3 g of aspirin (C₉H₈O₄) are produced from 79.8 g of C₇H₆O₃, what is the percent yield from the…

Q: how many grams of salicylic acid must be used in order to produce 7.50 grams of acetylsalicylic acid…

A: Acetylsalicylic acid produce when yield is 92% = 7.50grams

Q: Proactinium is a highly toxic metal and one of the rarest found on Earth. One method for preparing…

A: Stoichiometry is mainly the estimation of substance's quantity which are participating in any…

Q: Ammonium sulfate, a fertilizer, is made using the following chemical reaction: 2 NH3(g) +…

A: The theoretical yield of a given chemical reaction is obtained based on the balanced chemical…

Q: Complete the balanced equation: H3PO4 + 3 KOH → ? + ?

A: H3PO4 and KOH is given as a reactant Product = ?

Q: How many moles of BeCl2 are needed to react completely with 1.75 moles of LiH?

Q: 4Na(s) + O2(g) --> 2Na2O(s) if you have 18.0g of Na, how many grams of O2 are needed for the…

A: The given reaction is, 4Na(s) + O2(g) --> 2Na2O(s) Clearly, from the above…

Q: 1. Calculate all the elements present in benzoic acid in terms of a % by weight b. Mole %

A: We have to calculate the element present in benzoic acid by weight and mole % .

Q: Answer the questions about the balanced reaction 3 A + 2 B → 1 C + 100. cal How many moles of B are…

Q: What is the maximum yield of aspirin (ASP) that is possible to be synthesized from 3.45 g of…

A: Aspirin is synthesize from Salicylic acid . Chemical Reaction :- Salicylic acid + Acetic…

Q: 4Ga + 3S2 à 2Ga2S3 How many moles of Sulfur are needed to react with 12.5 moles of Gallium

A: 4Ga + 3S2 → 2Ga2S3 From the stoichiometry of the balanced chemical reaction, It…

Q: If 72.9 g of aspirin (C₉H₈O₄) are produced from 79.8 g of C₇H₆O₃, what is the percent yield from the…

Q: how many grams of glucose (C6H12O6) and how many grams of oxygen will be produced via photsynthesis…

A: CO2(g) + H2O (l) --> C6H12O6(s) + O2 (g) Given, mass of CO2 = 25.0 g MOLAR Mass of C6H12O6 =…

Q: 1.In the preparation of aspirin, 6.0 grams of salicylic acid was made to react with acetic anhydride…

A: 1) Given: Mass of salicylic acid used = 6.0 g. And mass of aspirin produced actually = 4 g.

Q: the theoretical yield of PCl3?

A: Given: Mass of P4 = 10.0 g Mass of PCl3 (actual yield) = 35.0 g Molar mass of P4 = 123.89 g/mol…

Q: How many moles of NiCl2 can be formed in the reaction of 6.00 mol of Ni and 12.0 mol of HCl?

A: When two reactive compounds are mixed, then they react according to the stoichiometry of the…

Q: C,H,0 + 30, → 2C0, + 3H,0 How many of each atom is present in the products? C= H=

A: The answer to the following question is given as -

Q: How many moles of water are made from complete reaction of 4.3 moles of oxygen gas with hydrogen gas…

A: Given reaction: 2H2 + O2 → 2H2O We have to calculate the number of moles of water that will be…

Q: 2Al2O3 yields 4Al +3O2 delta H = 3351.5 kJ what is the delta H for the formation of 10.2 g of Al2…

A: Enthalpy of reaction is equal to the difference in enthalpy of product and reactants.…

Q: _HCI + Ma(OH)2 →_MgCl2 + _H2O a. What is the balance chemical equation of the reaction? b. How many…

Q: 1+) How many grams of chlorine gas are needed to make A grams Gf sudium Chinde ? herolG SONR O of…

A: Given, 117 g of NaCl is produced.

Q: If 8.6 grams of a certain fertilizer is found to contain 1.12 grams of phosphorus as PzOs, what is…

A: Given the mass of fertilizer = 8.6 g Given the mass of P in form of P2O5 = 1.12 g In N-P-K…

Q: What are the coefficients when the following equation is properly balanced? 2H6S + O2 --> CO2 + SO2…

A: What are the coefficients of the given reaction--

Q: N2(g) + 3H2(g) -> 2NH3(aq) If you have 20g of N2 and 5.0g of H2 which is the limiting agent?

A: We are given the following balanced chemical reaction: N2(g) + 3H2(g) → 2NH3(aq) The given mass of…

Q: Fe + H20)→ Fez04(s) + H ²(ø) a. How many moles of Fe would be required to react with 2.0 mol of H20?

A: The species that react in a reaction undergo effective collisions to bring out a chemical reaction.…

Q: If 42.1 g of C4H10 0 react with 73.0 g of ccording to the reaction ation : C4H10 0 + 02 CO2 + H20 a)…

A: Reaction organic compound with oxygen gas is called as "combustion reaction" and products formed in…

Q: how many moles of O2 will react with 15.5 moles of Fe?

A: Given: The number of moles of Fe is 15.5 mol.

Q: How many grams of calcium phosphate can be produced from the reaction of 2.50L of 0.250M calcium…

A: Given that - Molarity of calcium chloride solution, CaCl2 = 0.250 M Volume of calcium chloride…

Q: Phthalonitrile (C₈H₄N₂) is produced by the ammoxidation of o-xylene (C₈H₁₀) according to the…

A: Given: Moles of o-xylene=15.3 moles To find: Mass of water

Q: 2AI(s) +6HCl(aq)----->2AIcl3 (aq) + 3H2 (g) If a sample of 4.0 mole of AI is added to a solution…

A: Given :- 2Al(s) + 6HCl(aq) →2AlCl3(aq) + 3H2(g) No. of moles of Al = 4.0 mol No. of moles of HCl…

Q: 2 KMNO, + 16 HCI → 2 KCI + 2 MnCl, + 8 H,0 + 5 Cl, a. How many grams of KMNO, are needed to produce…

A: First of all, we will calculate the masses of reactants from their molar masses in the balanced…

Q: 5. Excedrin can be taken for extreme headaches, such as migraines. The molecular formula for Extra…

A: " Since you have posted a question with multiple sub-parts , we will solve first three sub-parts for…

Q: After lithium hydroxide (LiOH) is produced aboard the space shuttle by reaction of Li2O with H2O, it…

A: The number of moles of a substance and its mass is related by the formula: number of moles=massmolar…

Concept explainers

Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".

Question

Solve the following problems on molecular/empirical formula determinations:
2. The hormone norephinephrine, which is released by the body when it is stressed, is
made
up of 56.8% H, 28.4% N. Determine its EF.
3. An alcohol contains 64.81% C, 13.60% H, and 21.59% O. The molecular mass of this
compound is 74 g/mol. Determine its EF and MF.
4. A 0.545 g of Al burns completely in the presence of O, creating 1.030 g of the metal
oxide.
Find its EF.

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.

Similar questions

How to balance N2H4 + N2O4= N2 + H2O when mol N2O4 is 2.5?
True or false? The atom with the largest subscript in a formula is die atom with the largest percent by mass in the compound. If true, explain why with an example. If false, explain why with an example. In either case, provide mathematical support
1.) The first step in the reaction of Alka–Seltzer with stomach acid consists of one mole of sodium bicarbonate (NaHCO3) reacting with one mole of hydrochloric acid (HCl) to produce one mole of carbonic acid (H2CO3), and one mole of sodium chloride (NaCl). Using this chemical stoichiometry, determine the number of moles of carbonic acid that can be produced from 3 mol NaHCO3 and 8 mol HCl. moles of carbonic acid : molHow much excess reactant remains after the reaction?excess reactant : mol 2.) The concept of determining which reactant is limiting and which is in excess is akin to determining the number of sandwiches that can be made from a set number of ingredients. Assuming that a cheese sandwich consists of 2 slices of bread and 3 slices of cheese, determine the number of whole cheese sandwiches that can be prepared from 28 slices of bread and 39 slices of cheese. number of sandwiches: What quantity of the ingredient in excess remains?quantity of…
Terephthalic acid is an important chemical used in the manufacture of polyesters and plasticizers. Itcontains only C, H, and O. Combustion of 19.81mg terephthalic acid produces 41.98 mg CO2 and 6.45 mg H2O. If 0.250 mole of terephthalic 41.98 mg CO2 and 6.45 mg H2O. If 0.250 mole of terephthalic acid has a mass of 41.5 g, determine the molecular formula for terephthalic acid.
A student carried out the reaction shown by reacting 10.0g P4 with excess Cl2 and obtained 35.0g of PCl3. P4 + 6Cl2 ----> 4PCl3 What is the theoretical yield of PCl3?
12) Combustion analysis of 150.0 mg of Compound X, a compound composed of carbon, hydrogen and oxygen gives 64.3 mg of H2O and 314.2 mg of CO2. a) What is the empirical formula of Compound X? b) Next, identify the molecular weight and calculate the molecular formula. (Can you explain in detail where you get the numbers?)
Phosphoric acid is made commercially by reaction of fluorapatite with sulfuric acid:Ca5F(PO4)3 + 5 H2SO4 + 10 H2O -> 5 CaSO4 . 2 H2O + HF + 3 H3PO4 How many milliters of 4.839 M sulfuric acid would be required to react with 2.861 grams of Ca5F(PO4)3? Show your work, including moles and mole ratios.
1.Calculate the number of moles of hydrogen chloride produced from 10 moles of hydrogen. H2(g) + Cl2(g) - - > 2HCl(g) 2. Calculate the number of moles of chlorine needed to form 14 moles of iron(III) chloride. 2Fe(s) + 3Cl2(g) - - > 2FeCl3(s) 3. Calculate the number of grams of nitrogen dioxide that are produced from 4 moles of nitric oxide. 2NO(g) +O2(g) - - > 2NO2(g) 4. Calculate the mass of oxygen produced from the decomposition of 75.0 g of potassium chlorate. 2KClO3(s) - - > 2KCl(s) + 3O2(g) 5. Calculate the mass of silver needed to react with chlorine to produce 84 g of silver chloride. (Hint: Write a balanced equation first.)
Consider the reaction below. 5 P4O6 + 8 I2 → 4 P2I4 + 3 P4O10 (a) How many grams of I2 should be added to 4.20 g of P4O6 in order to have a 17.4% excess? g(b) What is the theoretical yield of P4O10? g(c) How many grams of P2I4 would be isolated if the actual yield is 83.4%?
Terephthalic acid is an important chemical used to manufacture polyesters and plasticizers. It contains only C, H, and O. Combustion of 19.81mg of the terephthalic acid produces 41.98mg CO₂ ad 6.45mg H₂O. If 0.250mol of the terephthalic acid has a mass of 41.5g, determine the molecular formula of the terephthalic acid.
Aspirin, C9H8O4, is a common pain reliever and is also often given in low doses daily for prevention of heart attacks. How many grams of aspirin are present in a sample that contains 0.0745 no?
H3PO4 + 3NaOH ---> Na3PO4 + 3H2O If you mix 100 ml of 8.5M H3PO4 with 150 ml of 9.0M NaOH, how many g of Na3PO4 will be produced? What is your limiting reagent? If you only got 59.5 g of Na3PO4, what is your percent yield? How many grams of your excess reagent do you have left over?