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(a)
Interpretation:
Total moles of atoms that is present in
Concept Introduction:
Chemical formula of a substance can be interpreted in two different ways, namely, in microscopic-level and macroscopic-level. Chemical formula at microscopic-level can be said as the one that indicates the number of atoms of different elements that is present in a formula unit or one molecule of substance. The numerical value present in subscripts in a chemical formula indicates the number of atoms of various elements that is present in one formula unit of substance.
In macroscopic-level the chemical formula of a substance indicates the number of moles of atoms of different elements that is present in one mole of a substance.
Conversion factors which relate a component of a substance to the substance as a whole are dependent on the chemical formula of the substance.
(b)
Interpretation:
Total moles of atoms that is present in
Concept Introduction:
Chemical formula of a substance can be interpreted in two different ways, namely, in microscopic-level and macroscopic-level. Chemical formula at microscopic-level can be said as the one that indicates the number of atoms of different elements that is present in a formula unit or one molecule of substance. The numerical value present in subscripts in a chemical formula indicates the number of atoms of various elements that is present in one formula unit of substance.
In macroscopic-level the chemical formula of a substance indicates the number of moles of atoms of different elements that is present in one mole of a substance.
Conversion factors which relate a component of a substance to the substance as a whole are dependent on the chemical formula of the substance.
(c)
Interpretation:
Total moles of atoms that is present in
Concept Introduction:
Chemical formula of a substance can be interpreted in two different ways, namely, in microscopic-level and macroscopic-level. Chemical formula at microscopic-level can be said as the one that indicates the number of atoms of different elements that is present in a formula unit or one molecule of substance. The numerical value present in subscripts in a chemical formula indicates the number of atoms of various elements that is present in one formula unit of substance.
In macroscopic-level the chemical formula of a substance indicates the number of moles of atoms of different elements that is present in one mole of a substance.
Conversion factors which relate a component of a substance to the substance as a whole are dependent on the chemical formula of the substance.
(d)
Interpretation:
Total moles of atoms that is present in
Concept Introduction:
Chemical formula of a substance can be interpreted in two different ways, namely, in microscopic-level and macroscopic-level. Chemical formula at microscopic-level can be said as the one that indicates the number of atoms of different elements that is present in a formula unit or one molecule of substance. The numerical value present in subscripts in a chemical formula indicates the number of atoms of various elements that is present in one formula unit of substance.
In macroscopic-level the chemical formula of a substance indicates the number of moles of atoms of different elements that is present in one mole of a substance.
Conversion factors which relate a component of a substance to the substance as a whole are dependent on the chemical formula of the substance.
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Chapter 6 Solutions
General, Organic, and Biological Chemistry
- . How many atoms of carbon are present in 1 .0 g of CH4O ? How many atoms of carbon are present in 1.0 of CH3CH2OH ? How many atoms of nitrogen are present in 25.0 g of CO( NH2)2 ?arrow_forwardComplete the following table. l> Mass of Sample Moles of Sample Molecules in Sample Atoms in Sample 4.24 g msp;C6H6 0.224 mol msp;H2O msp;2.711022 molecules msp;CO2 1.26 mol HCl td> msp;2.211024 molecules msp;H2O 0.297 g msp;CH3OHarrow_forwardIn a chemical reaction, the total number of atoms present after the reaction is complete is (larger than/smaller than/the same as) the total number of atoms present before the reaction began.arrow_forward
- 3.79 Consider two samples. Sample A contains 2 moles of N2 and 1 mole of O2, and Sample B contains 1 mole of N2O5. (a) Which sample contains more molecules? (b) Which sample contains more oxygen atoms? (c) Which sample contains more nitrogen atoms?arrow_forwardConsider the following diagram, where atom X is represented by a square and atom Y is represented by a circle. (a) Write the equation for the reaction represented by the diagram. (b) If each circle stands for a mole of Y and each square a mole of X, how many moles of X did one start with? How many moles of Y? (c) Using the same representation described in part (b), how many moles of product are formed? How many moles of X and Y are left unreacted?arrow_forwardConsidering your answer to Exercise 79, which type of formula, empirical or molecular, can be obtained from elemental analysis that gives percent composition?arrow_forward
- Determine the number of moles in each substance. a. 3.251020 atoms of lead b. 4.961024 molecules ofglucose c. 1.561023 formula units of sodium hydroxide d. 1.251025 copper(II) ionsarrow_forwardWhat quantity serves as the conversion factor between the mass of a sample and how many moles the sample contains?arrow_forwardHow many molecules of C2H4Cl2 can be prepared from 15C2H4 molecules and 8Cl2 molecules?arrow_forward
- Use the average atomic masses given inside the front cover of this book to calculate the mass in grains of each of the following samples. l type='a'> 0.251 mole of lithium 1.51 moles of aluminum 8.75102 moles of lead 125 moles of chromium 4.25103 moles of iron 0.000105 mole of magnesiumarrow_forwarda How many molecules are in 3.61g F2? b How many atoms are in 3.61g F2? c How many atoms are in 3.61g F? d What is the mass of 3.611023 F atoms? e What is the mass of 3.611023 F2 molecules?arrow_forward3.78 Consider two samples of liquid: I mole of water (H2O) and 1 mole of ethanol. Answer each of the following questions. Note that none of these should require significant calculations. (a) Which sample contains more atoms? (b) Which sample contains more molecules? (c) Which sample has a larger mass?arrow_forward
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