NameDateBlockPercent Composition and Molecular Formula Worksheet1. Calculate the percent of nitrogen in urea, NH¿CONH,.2. Calculate the percentage of water in zinc sulfate heptahydrate.3. Calculate the percentage of oxygen in potassium chlorate.4. Calculate the percentage of tin in potassium stannate trihydrate, K2SNO3 •2H2OWrite the molecular formulas of the following compounds:5. A compound with an empirical formula of C:OH4 and a molar mass of 88 grams per mole.6. A compound with an empirical formula of C.H.O and a molar mass of 136 grams per mole.7. A compound with an empirical formula of CFBrO and a molar mass of 254.7 grams per mole.8. A compound with an empirical formula of C:H&N and a molar mass of 46 grams per mole.Answer the following questions:9. The percentage composition of acetic acid is found to be 39.9% C, 6.7% H, and 53.4% O. Determine theempirical formula of acetic acid.10. The molar mass for question #9 was determined by experiment to be 60.0 g/mol. What is the molecularformula?11. What's the empirical formula of a molecule containing 18.7% lithium, 16.3% carbon, and 65.0% oxygen?12. A 50.51 g sample of a compound made from phosphorus and chlorine is decomposed. Analysis of theproducts showed that 11.39 g of phosphorus atoms were produced. What is the empirical formula of thecompound?13. When 2.5000 g of an oxide of mercury, (Hg O) is decomposed into the elements by heating, 2.405 g ofmercury are produced. Calculate the empirical formula.14. The compound benzamide has the following percent composition. What is the empirical formula?C= 69.40 % H= 5.825 % O = 13.21 % N= 11.57 %15. A component of protein called serine has an approximate molar mass of 100 g/mole. If the percentcomposition is as follows, what is the empirical and molecular formula of serine?C = 34.95 % H= 6.844 % O = 46.56 % N= 13.59 %16. Aniline, a starting material for urethane plastic foams, consists of C, H, and N. Combustion of suchcompounds yields CO2, H2O, and N2 as products. If the combustion of 9.71 g of aniline yields 6.63 g H20 and1.46 g N2, what is its empfrical formula?Page1 IQ +117. The molar mass of aniline is 93 g/mol. What is its moleculaformula?

“Since you have asked multiple question, we will solve the first question for you. If you want any…

Percent Composition and Molecular Formula Worksheet 1. Calculate the percent of nitrogen in urea, NH₂CONH₂. 2. Calculate the percentage of water in zinc sulfate heptahydrate. 3. Calculate the percentage of oxygen in potassium chlorate.

Percent Composition and Molecular Formula Worksheet 1. Calculate the percent of nitrogen in urea, NH₂CONH₂. 2. Calculate the percentage of water in zinc sulfate heptahydrate. 3. Calculate the percentage of oxygen in potassium chlorate.

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter2: Chemical Compounds

Section: Chapter Questions

Problem 141QRT

See similar textbooks

Related questions

Q: Iron metal reacts with chlorine gas giving iron (III) chloride. The balanced chemical equation for…

A: Given reaction is 2 Fe (s) + 3 Cl2 (g) -->…

Q: How many grams of solid magnesium chloride (MgCl2, 95.21 g/mol) are need to make 250 mL of 0.50 M…

Q: answer

A: The monosaccharide depicted below is in the alpha and beta form. These type of isomers are called…

Q: 3) Draw Fischer projections for all stereoisomers of the following compound: Br Br Br You should…

Q: 2. Use Ring A in part a to answer parts a-c. Use a molecular model kit to assist you. a. Complete…

A: Gauche Interaction- The relationship between two atoms or group whose dihedral angke is more than 00…

Q: A sample which contains only arbitrary salts AB (72.55 g/mol) and CB2 (266.15 g/mol) yielded 0.1152…

A: Given the total mass of the sample(AB+CB2) = 0.3857 g Mass of the product precipitate, DB formed =…

Q: Estimate the IR stretching frequency (in cm³¹) for the indicated bond in the molecule below. Do not…

A: Given , Bond under consideration C=O

Q: Use one of the following values: If 1.05 mol of an ideal gas at 274 K has a volume of 203 L, what…

A: Given, number of moles (n) = 1.05 mol Temperature (T) = 274 K Volume (V) = 203 L Pressure (P) = ?…

Q: The mole ratios among the reactants and products in a chemical reaction. empirical formula O formula…

Q: The following is neither cis nor trans trans cis ********* No answer text provided.

A: Cis -trans- isomer : Such geometrical isomers contain double bond or ring which restrict the…

Q: Primary alcohols can be dehydrated in an acid-catalyzed reaction. The mechanism is an E2 elimination…

A: Curved Arrow mechanism is shown below for this particular step of E2 elimination reaction.

Q: O The O atom in the carbonyl (C=O) group the C atom in the carbonly (C=O) group Any H atom Catom not…

Q: What is the final temperature in Celsius of 470.1 g of water (specific heat = 4.184 J/g Celsius) at…

A: Heat energy (Q) = m × s × ∆T Where m=mass of sample , s= specific heat of sample , ∆T = Final…

Q: According to the following reaction, how many grams of ammonia will be formed upon the complete…

A: Molar mass of Bromine (Br2) = 160 gm Molar mass of Chlorine (Cl2) = 71 gm

Q: A sample of Nitrogen at 15.0oC exerts a pressure of 0.279 atm. Calculate the final pressure in atm…

Q: (R)- carvone has a specific rotation of -61. What is the specific rotation of a pure sample of…

A: Given, The (R) - Carvone has a specific rotation of -61, the specific rotation of a pure sample of…

Q: The following structures are OH O identical O diastereomers NHCH3 Oenantiomers O constitutional…

A: We have to select the correct option for the given two structures

Q: Experiment 1 Data Table 2: Experimental Results HCI available for neutralization (g): Moles of NaOH…

Q: Identify the major and minor products for the E2 reaction that occurs when each of the following…

Q: Use the standard reaction enthalpies given below to determine Delta H reaction for the following…

Q: What is the product of the following reaction? OCH, OCH, OH OH CH OH, Hº OCH, OH 11 А) 1 B) II С)…

Q: An Alka-Seltzer tablet contains exactly 75.0 mg of citric acid, H3 C6H5O7, plus some sodium…

Q: 6. For each of the drug molecules shown below, determine if it is an acidic drug molecule, a basic…

Q: Which of the following is soluble in water? O silver bromide O copper (1) phosphate O silver…

Q: III. Compare the pKa of acetic acid in water, carbon tetrachloride, and dimethyl sulfoxide (these…

Q: Calculate the heat of reaction AH for the following reaction: 2 HBr(9) H₂(g) + Br₂(9) You can find a…

A: A question based on chemical thermodynamics that is to be accomplished.

Q: given chiral molecule, leaving us to find a way to make both enantiomers of a chiral produc…

Q: Which of the following compounds is insoluble in water? O Fe(CH3COO)2 O Fes O FENO3 O FeSO4

A: Water is a polar solvent. Polar and ionic compounds are soluble in water while nonpolar and non…

Q: There are two isotopes of an unknown element, X-19 and X-21. The abundance of X-19 is 10.93%. Now…

Q: STARTING AMOUNT X 1 A light bulb consumes energy at a rate of 80.0 joules per second. How long in…

Q: Metalloproteases can contain a catalytic triad made up o O D(H₂O)D E(Ln*)S None of the choices are…

Q: OD B O A OC Which of the following is an energy diagram for a two-step reaction? free energy. kJ/mol…

A: we have to select the energy diagram that represents a two step reaction

Q: Determine the ΔH of the following reactions. 1.) CH4 (g) + 2 O2 (g) à CO2 (g) + 2 H2O (l)…

A: Determine the ΔH of the following reactions.

Q: is the Chirality center in the following compound Bor $7 O No answer text provided. OS S O No…

Q: Commercial sodium "hydrosulfite" is 90.1% Na2S2O4. The sequence of reactions used to prepare the…

Q: Can you solve these three questions please? 1. Which type of bond joins amino acids into proteins?…

A: -> If in R group of amino acids any hetro atom is present then it must be polar.

Q: Data Table 4: Control Experiment Results Moles of NaOH needed to neutralize 5.0 mL of 1.0M HCI…

Q: STARTING AMOUNT X (0.01)³ * ( ) 1 0.076 0.1 (100)³ cm³ Convert 7.6 7.6 1000 m³ cm³ to (0.1)³ 0.01 cm…

A: In different fields of science, the dimensional analysis is used to determine the relation between…

Q: predict, balance and identify the following a. ___K3PO4 + ___ MgCl2 --> b. ___Fe + ___Na2CO3 -->…

A: Given,a. K3PO4 + MgCl2 →b. Fe + Na2CO3 →c. CH4 + O2 →d. H2 + Cl2 →e. NH3 →Required,…

Q: rect IUPAC name for the compound

A: IUPAC nomenclature is used for naming the organic compound as recommended by international union of…

Q: Name the following: H H H-C-C-0-C-C-H | H | H O acetone butyraldehyde diethylketone O diethyl ether…

Q: Boron forms a series of compounds with hydrogen, all with the general formula B₂ Hy. X BH₁(s) +…

Q: Given the following diagram illustrating the thermodynamics of the spontaneous sublimation of dry…

A: For a spontaneous process ∆G is negative while during the sublimation heat is absorbed so ∆H is…

Q: Specify the reagent you would use in each step of the following synthesis: a. LIAIH4 b. H₂SO4 c. HCI…

Q: What is the expected major product of the following reaction? Br Br HBr ?

Q: Iron metal reacts with chlorine gas giving iron(III) chloride. The balanced chemical equation for…

A: Given, mass of iron = 32.0 g we know, molar mass of iron(Fe) = 55.845 g/mol => moles of iron =…

Q: Which of the following compounds is likely to have an unpleasant odor? CH3CH2OH CH3CH2OCH2CH3…

A: For the first question, we have to find the compound that has an unpleasant odor. For the second…

Q: In the following reaction, which is the oxidizing agent? AgNO2+ Cl₂ + 2KOH → AgNO3+2KCI + H₂O O…

A: Answer : Correct option is (b) Cl2 Explainination : oxidizing agent is a…

Q: The Brønsted-Lowry definition of acids and bases is: Acids are proton donors, bases are proton…

A: Choose the correct option for Bronsted-Lowry definition of acid and bases is ?

Q: Potassium perchlorate is prepared by the following sequence of reactions: Cl₂ (g) + 2 KOH(aq) →…

Concept explainers

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.

Question

Name
Date
Block
Percent Composition and Molecular Formula Worksheet
1. Calculate the percent of nitrogen in urea, NH¿CONH,.
2. Calculate the percentage of water in zinc sulfate heptahydrate.
3. Calculate the percentage of oxygen in potassium chlorate.
4. Calculate the percentage of tin in potassium stannate trihydrate, K2SNO3 •2H2O
Write the molecular formulas of the following compounds:
5. A compound with an empirical formula of C:OH4 and a molar mass of 88 grams per mole.
6. A compound with an empirical formula of C.H.O and a molar mass of 136 grams per mole.
7. A compound with an empirical formula of CFBrO and a molar mass of 254.7 grams per mole.
8. A compound with an empirical formula of C:H&N and a molar mass of 46 grams per mole.
Answer the following questions:
9. The percentage composition of acetic acid is found to be 39.9% C, 6.7% H, and 53.4% O. Determine the
empirical formula of acetic acid.
10. The molar mass for question #9 was determined by experiment to be 60.0 g/mol. What is the molecular
formula?
11. What's the empirical formula of a molecule containing 18.7% lithium, 16.3% carbon, and 65.0% oxygen?
12. A 50.51 g sample of a compound made from phosphorus and chlorine is decomposed. Analysis of the
products showed that 11.39 g of phosphorus atoms were produced. What is the empirical formula of the
compound?
13. When 2.5000 g of an oxide of mercury, (Hg O) is decomposed into the elements by heating, 2.405 g of
mercury are produced. Calculate the empirical formula.
14. The compound benzamide has the following percent composition. What is the empirical formula?
C= 69.40 % H= 5.825 % O = 13.21 % N= 11.57 %
15. A component of protein called serine has an approximate molar mass of 100 g/mole. If the percent
composition is as follows, what is the empirical and molecular formula of serine?
C = 34.95 % H= 6.844 % O = 46.56 % N= 13.59 %
16. Aniline, a starting material for urethane plastic foams, consists of C, H, and N. Combustion of such
compounds yields CO2, H2O, and N2 as products. If the combustion of 9.71 g of aniline yields 6.63 g H20 and
1.46 g N2, what is its empfrical formula?
Page
1 I
Q +
1
17. The molar mass of aniline is 93 g/mol. What is its molecula
formula?

Expert Solution

This question has been solved!

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

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps with 1 images

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

An element X bas five major isotopes, which are listed below along with their abundances. What is the element? Isotope Percent Natural Abundance Mass (u) 46x 8.00% 45.95232 47x 7.30% 46.951764 48x 73.80% 47.947947 49x 5.50% 48.947841 50x 5.40% 49.944792
What number of molecules (or formula units) are present in 1.00 g of each of the compounds in Exercise 51?
3.118 Consider common sugars such as glucose (C6H12O6) and sucrose (C12H22O11). What type of chemical bonding would you expect to find in these chemicals?
Fulgurites are the products of the melting that occurs when lightning strikes the earth. Microscopic examination of a sand fulgurite shows that it is a globule with variable composition that contains some grains of the definite chemical composition Fe 46.01%, Si 53.99%. Determine the empirical formula of these grains.
Determine the simplest formulas of the following compounds: (a) tetraethyl lead, the banned gasoline anti-knock additive, which is composed of 29.71% C, 6.234% H, and 64.07% Pb (b) citric acid, present in most sour fruit, which is com- posed of 37.51% C, 4.20% H, and 58.29% O (c) cisplatin, a drug used in chemotherapy, which is composed of 9.34% N, 2.02% H, 23.36% Cl, and 65.50% Pt
2.37 Why are empirical formulas preferred for describing polymer molecules?
For each of the following samples of ionic substances, calculate the number of moles and mass of the positive ions present in each sample. l type="a"> 4.25 g of ammonium iodide, NH4I i>6.31 moles of ammonium sulfide, ( NH4)2S i>9.71 g of barium phosphide, Ba3P2 i>7.63 moles of calcium phosphate, Ca3( PO4)2
A reagent occasionally used in chemical synthesis is sodium-potassium alloy. (Alloys are mixtures of metals, and Na-K has the interesting property that it is a liquid.) One formulation of the alloy (the one that melts at the lowest temperature) contains 68 atom percent K; that is, out of every 100 atoms, 68 are K and 32 are Na. What is the mass percent of potassium in sodium-potassium alloy?
certain transition metal ion (Mn+) forms a compound with oxygen (MxOy) . The molar mass of the compound is 250.2 g/mol. If the charge on the transition metal ion is +3, what is the identity of the transition metal, M? l type='a'> Th Ti Hg Ru Ag
n chemistry, what is meant by the term mole? What is the importance of the mole concept?
Arrange the following substances in order of increasing mass percent of carbon. a. caffeine. C8H10N4O2 b. sucrose, C12H22O11 c. ethanol, C2H5OH
By x-ray diffraction it is possible to determine the geometric pattern in which atoms are arranged in a crystal and the distances between atoms. In a crystal of silver, four atoms effectively occupy the volume of a cube 0.409 nm on an edge. Taking the density of silver to be 10.5 g/cm3, calculate the number of atoms in one mole of silver.