What is a mole of a substance? O alaboratory spoon full of a substance O The amount of a substance that would completely react with 12g of carbon O Avogadro's number of atoms (or molecules) of a substance

What is a mole of a substance? O alaboratory spoon full of a substance O The amount of a substance that would completely react with 12g of carbon O Avogadro's number of atoms (or molecules) of a substance

Chemistry: Matter and Change

1st Edition

ISBN:9780078746376

Author:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom

Publisher:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom

Chapter10: The Mole

Section: Chapter Questions

Problem 190A

See similar textbooks

Related questions

Q: compound

A: The first step is to calculate the molar mass of KNO3. It can be calculated as follows: Molar mass=…

Q: Calculate the percent composition of the product you made. Hint: You must know the identity and.…

Q: Methanethiol (CH4S) has a disagreeable odor and is oftena component of bad breath. When methanethiol…

A: Methanethiol is an organosulfur compound and its chemical formula is CH ₃SH. It is a colorless gas…

Q: A sample of a compund made entirely from copper and oxygen was founf to have a total mass of…

Q: A. Calculate the number of molecules in 3.00 molesmoles H2S B. Calculate the number of moles of…

A: A. Moles of H2S=3.00 mol We need to find number of molecules. B. Number of formula units of…

Q: Mass of oxygen = 0.49g- 0.33g = 0.16g Number of moles = given mass / molar mass Number of moles of…

Q: Which of the following statements BEST describes a mole? O It is equal to the number of molecules O…

A: 1 mole contains 6 X 10 23 no of molecules. Therefore it is equal to the Avogadro's number of…

Q: Percent yields are generally calculated from masses. Would the result be the same if amounts (mol)…

A: Yes, same result will be obtained. Formula: Percent yield = actual mass of product…

Q: a. How many moles? b. Weight how much? c. Contains how many molecules?

Q: Which of the following is NOT a true statement about molar The molar mass is the number of grams of…

A: Molar mass is defined as mass of one mole of substance

Q: Chlorofluorocarbons (CFC's) are a class of compounds that have a long b of use in refrigerators…

A: Since you have posted multiple questions, we are entitled to answer the first only.

Q: What is the a.) Balanced Chemical Reaction b.) percent (%) composition by mass of each compound…

A: Molecular formula of calcium polysulphide = CaS5 Molecular formula of hydrochloric acid = HCl The %…

Q: Define a scope of Convert between moles of a compound and moles of aconstituent element

A: The conversion factor between moles of a compound and moles of constituent element has to be…

Q: A sample of chloroethane, C,H,CI, contains 0.274 mol of the compound. What is the mass of the…

A: Number of moles = mass ÷ molecular mass Mass of compound= number of moles× molecular mass For…

Q: For #60 Would the molar mass (g/mol) of hydrogen be 1g/mol or 2g/mol for m= (1.5x10^24 atoms*…

A: (60) According to the mole concept - One mole of substance = atomic /molar mass = 22.4 L =…

Q: Q/Choose between parentheses 1- moles of substance contain ..... particles * (Non of these/18.066…

A: According to the mole concept, in terms of mass, the amount of substance in moles is equal to the…

Q: Your theoretical yield is 63.247 g. You isolated 13.5648 g of alum. What is your percent yield?

Q: A compound contains 6.0 g of carbon and 1.0 g ofhydrogen, and has a molar mass of 42.0 g/mol. What…

A: The empirical formula is the chemical formula of the simplest ratio of the number of atoms of each…

Q: thetr many years chloroform (CHCI3) was used as an inhalation anesthetic in spite of the fact the t…

Q: The subscripts in a chemical formula give relationshipsbetween moles of the constituent elements and…

A: Given statement: "The subscripts in a chemical formula give relationships between moles of the…

Q: How many molecules of carbon monoxide (CO) needed to reactwith-excoss irOE()oxide-(E) to produce…

Q: C4H10 and C6H12 are both hydrocarbons. Whic one contains higher mass percentage of carbon?

Q: What is the empirical formula (Na?S?O?) for a pure compound consisting of 29.1% sodium, 40.6%…

A: Empirical formula is represents the simplest ratio of atom in a compound.

Q: This organic compound consists of 54.4% carbon, C and 9.1% hydrogen, H, while the remaining percent…

Q: CALCULATE TH EMASS IN GRAMS OF 1.11 MOL OF CH4-

A: Given: The number of moles of CH4 is 1.11 mol. The molar mass of CH4 is 16.04 g/mol.

Q: Convert 691.3 molecules of methane into moles. Your answer should have 4 sig. figs. I know the…

A: The number of molecules in one mole of compound is equal to the Avogadro’s number.

Q: (f) A certain pure compound containing element E is analyzed. The elemental composition of the…

Q: d. How many grams of phosphorus pentachloride are theoretically produced? If 0.450g of phosphorus…

A: From the given problem, the balanced equation is: P4 (s) + 10 Cl2 (g) → 4PCl5 (s) For chlorine gas…

Q: Amount of molecules in 0.897 mol of ethylene

A: In this question, we will determine the amount ( mass ) of the ethylene ( Ethene ) molecule from the…

Q: An element’s molar mass in grams per mole is numerically equal tothe element’s atomic mass in atomic…

A: An element's molar mass in g/mol is numerically equal to the element's atomic mass in atomic mass…

Q: How many molecules (not moles) of NH3 are produced from 7.42×10−4 g of H2?

A: To obtain the number of molecules, first of all the reaction for the production of NH3 should be…

Q: Calculate the percentage of carbon by mass in each of thecompounds represented by the following…

A: a. Molar mass of CO2 is 44 g/mol % of carbon would be 12*100/44 = 27.3% b. Molar mass of CH3OH is 32…

Q: Calculate the number of moles molecules in: ct an a) 10 g water b) 10 g ethanol C,H,O c) 10 g of…

A: Formula Used, 1. molesn=given massMolar Mass 2. Molecules = Moles x 6.023 x 1023

Q: in the laboratory, a student weighs out 0.0852 g of cobalt on balance. how many atoms of cobalt are…

A: We have 0.0852 g of Co , we have to calculate the atoms of cobalt in the sample.

Q: A compound with the empirical formula CH2CH2 has a molar mass of 5656 g/mol. What is the molecular…

A: Empirical formula: - The formula which gives thesimplest whole number ratio af atoms ofvarious…

Q: A 0.025-g sample of a compound composed of boron and hydrogen, with a molecular mass of ~28 amu,…

A: The empirical formula is the chemical formula of any compound that represents the proportions of…

Q: How many molecules of carbon monoxide (CO) needed to react with-excoss trOn () oxide-(E03) to…

Q: The following diagram represents the collection of elementsformed by a decomposition reaction. (a)…

A: a. The above diagram we can tell the empirical formula would be N atoms are in numbers of three and…

Q: Box the given and underline the unknown. MASS GRAMS 1. How many moles of nickel are in 82.34 grams…

Q: Percent Composition by Mass: = 3.907 g of carbon combines completely with O.874 g of hydrogen to orm…

A: The question is based on the concept of calculation of mass percent. the mass percent of an element…

Q: Completé the föllóWing tåbles. Mass of Sample Moles of Sample Molecules in Sample Total Atoms in…

Q: 3. Differentiate and define between: inorganic ionic compounds, inorganic covalent compounds,…

A: Solution The compounds are classified into two types on the basis of sources as below : Inorganic…

Q: A compound containing only sulfur and phosphorus is 50.9% S by mass; the molar mass is 252 g/mol.…

Q: Calculate the percentage of carbon by mass in each of thecompounds represented by the following…

A: Mass percent is one of the many ways of calculating the concentration. It is calculated as follows:…

Q: Caroline knows the amount of a compound in moles. To find the number of molecules in the given…

A: it was known, the amount of a compound in moles.

Q: 25 a compound has empirical formula of CH4O2 and a molar mass of 144 g/mol. What is its ?molecular…

Q: How many molecules (not moles) of NH3 are produced from 7.43×10-4 g of H2? Express your answer…

Q: . Use the molar masses of the elements in the product to calculate the number of moles of…

A: Each chemical reaction occurs according to the stoichiometry of the reaction. Elements combine in a…

Q: A sample of a compund made entirely from copper and oxygen was founf to have a total mass of…

A: Given,Total mass of sample = 0.1431gMass of copper = 0.1271gThe mass of oxygen is determined as,

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

What is a mole of a substance?
O alaboratory spoon full of a substance
O The amount of a substance that would completely react with 12g of carbon
O Avogadro's number of atoms (or molecules) of a substance

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 with 2 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

How many objects are in 1 mol? What is the common name for this number of objects?
Atoms of three different elements are represented by O, , and . Which compound is left over when three molecules of O. and three molecules of . react to form O. And O?
itamin B12 , cyancobalamin, is essential for human nutrition. Its molecular formula is C63H88CoN14O14P . A lack of this vita min in the diet can lead to anemia. Cyanocohalamin is the form of the vitamin found in vitamin supplements. l type='a'> What is the molar mass of cyanocobalamin to two decimal places? How many moles of cyanocohalamin molecules are present in 250 mg of cyanocobalamin? What is the mass of 0.60 mole of cyanocobalamin? How many atoms of hydrogen are in 1 .0 mole of cyanocobalamin? What is the mass of 1.0107 molecules of cyanocobalamin? What is the mass (in grams) of one molecule of cyanocobalamin?
One chocolate chip used in making chocolate chip cookies has a mass of 0.324 g. (a) How many chocolate chips are there in one mole of chocolate chips? (b) If a cookie needs IS chocolate chips, how many cookies can one make with a billionth (1109) of a mole of chocolate chips? (A billionth of a mole is scientifically known as a nanomole.)
Sodium borate decahydrate, Na2B4O710H2O is commonly known as borax. It is used as a deodorizer and mold inhibitor. A sample weighing 15.86 g is heated until a constant mass is obtained indicating that all the water has been evaporated off. (a) What percent, by mass of Na2B4O710H2O is water? (b) What is the mass of the anhydrous sodium borate, Na2B4O7?
A mixture of tetraphosphorus trisulfide and powdered glass is in the white tip of strike-anywhere matches. The P4S3 is made by the direct combination of the elements: 8P4+3S88P4S3. If 133g of phosphorus is mixed with the full contents of a 126-g(4-oz) bottle of sulfur, how many grams of the compound can be formed? How much of which element will be left over. The tips of strike-anywhere matches contain tetraphosphorus trisulfide, which reacts with the oxygen in the air in an exothermic change to inititae the burning reaction.
How many molecules of C2H4Cl2 can be prepared from 15C2H4 molecules and 8Cl2 molecules?
A 0.025-g sample of a compound composed of boron and hydrogen, with a molecular mass of ~28 amu, burns spontaneously when exposed to air, producing 0.063 g of B2O3. What are the empirical and molecular formulas of the compound?