 # 10 which of the following substances has a molar mass of 142 g Quick Guide

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### How To Calculate The Molar Mass of a Compound – Quick \u0026 Easy!

How To Calculate The Molar Mass of a Compound – Quick \u0026 Easy!
How To Calculate The Molar Mass of a Compound – Quick \u0026 Easy!

### The molecular mass of the molecule of a phosphorus compound P2X5 is 142 g. The atomic mass of phosphorus is 31 g. What will be the molecular mass of compound N2X4? 

The molecular mass of the molecule of a phosphorus compound P2X5 is 142 g. 112cm3 of a gaseous fluoride of phosphorus has a mass of 0.63 g
If the molecule of the fluoride contains only one atom of phosphorus, then determine the formula of the phosphorus fluoride. Calculate the molar mass of the following substances:

### Researchers obtained the following data from experiments to find … 

Researchers obtained the following data from experiments to. find the molecular formula of benzocaine, a local anesthetic,
Complete combustion of a 3.54-g sample of benzocaine with. This video solution was recommended by our tutors as helpful for the problem above.

### What is the Molar Mass of NaCl (table salt) 

In sodium chloride (ionic molecule) the sodium and chloride ions are in a 1:1 ratio. It’s also known as table salt, common salt, or halite (the mineral form of common salt)
There is one Sodium atom and one Chlorine atom in the formula for Sodium Chloride(NaCl). As a result, the molar mass of sodium chloride will be equal to the sum of the two atoms’ molar masses.
As a result, sodium chloride’s molar mass will be the sum of both molar masses.. As a result, we can deduce that one mol of mass is 58.44 g/mol.

### 3.2 Determining Empirical and Molecular Formulas – Chemistry 2e 

The previous section discussed the relationship between the bulk mass of a substance and the number of atoms or molecules it contains (moles). Given the chemical formula of the substance, one may determine the amount of the substance (moles) from its mass, and vice versa
The elemental makeup of a compound defines its chemical identity, and chemical formulas are the most succinct way of representing this elemental makeup. When a compound’s formula is unknown, measuring the mass of each of its constituent elements is often the first step in the process of determining the formula experimentally
For example, consider a gaseous compound composed solely of carbon and hydrogen. The percent composition of this compound could be represented as follows:

### Chemistry for Majors 

In the previous section, we discussed the relationship between the bulk mass of a substance and the number of atoms or molecules it contains (moles). Given the chemical formula of the substance, we were able to determine the amount of the substance (moles) from its mass, and vice versa
The elemental makeup of a compound defines its chemical identity, and chemical formulas are the most succinct way of representing this elemental makeup. When a compound’s formula is unknown, measuring the mass of each of its constituent elements is often the first step in the process of determining the formula experimentally
For example, consider a gaseous compound composed solely of carbon and hydrogen. The percent composition of this compound could be represented as follows:

### Combustion analysis of a 13.42-g sample of equilin (which contain… 

Combustion analysis of a 13.42-g sample of equilin (which contains. only carbon, hydrogen, and oxygen) produces 39.61 g CO2
Master Molecular Formula with a bite sized video explanation from Jules Bruno

### Molar mass 

In chemistry, the molar mass (M) of a chemical compound is defined as the ratio between the mass and the amount of substance (measured in moles) of any sample of said compound. The molar mass is a bulk, not molecular, property of a substance. The molar mass is an average of many instances of the compound, which often vary in mass due to the presence of isotopes
The molar mass is appropriate for converting between the mass of a substance and the amount of a substance for bulk quantities.. The molecular mass and formula mass are commonly used as a synonym of molar mass, particularly for molecular compounds; however, the most authoritative sources define it differently
The formula weight is a synonym of molar mass that is frequently used for non-molecular compounds, such as ionic salts.. The molar mass is an intensive property of the substance, that does not depend on the size of the sample

### Chemical Reactions 

Chapter 2 “Molecules, Ions, and Chemical Formulas” introduced you to a wide variety of chemical compounds, many of which have interesting applications. For example, nitrous oxide, a mild anesthetic, is also used as the propellant in cans of whipped cream, while copper(I) oxide is used as both a red glaze for ceramics and in antifouling bottom paints for boats
Our very existence depends on chemical reactions, such as those between oxygen in the air we breathe and nutrient molecules in the foods we eat. Other reactions cook those foods, heat our homes, and provide the energy to run our cars
Their development required that chemists understand how substances combine in certain ratios and under specific conditions to produce a new substance with particular properties.. The fourth most abundant alkali metal on Earth, sodium is a highly reactive element that is never found free in nature

### Molecular Weight Search 

Note: This search is by molecular weight based on single (most-abundant) isotope atomic masses. These weights may vary significantly from molecular weights based on average atomic masses
Please follow the steps below to conduct your search (Help):. You may search for species based on molecular weight values in two ways:
The limits of the range should be separated by a comma.. Rules for formula restriction (step 2) (Back to search)

### Molar Mass – Introductory Chemistry 

The mole is represented by Avogadro’s number, which is 6.022×1023 atoms or molecules per mol.. – The mole allows scientists to calculate the number of elementary entities (usually atoms or molecules ) in a certain mass of a given substance.
– The mass of one mole of a substance is equal to that substance’s molecular weight. For example, the mean molecular weight of water is 18.015 atomic mass units (amu), so one mole of water weight 18.015 grams.
The chemical changes observed in any reaction involve the rearrangement of billions of atoms. It is impractical to try to count or visualize all these atoms, but scientists need some way to refer to the entire quantity 10 which of the following substances has a molar mass of 142 g Quick Guide