The mass of a "F atom is 18.998 u. What is its mass relative to the mass of an atom of "C? 19F 12C

Q: If mass Q mass A = 0.571 in AQ, what is mass Q mass A = in A₂ Q3 ?

A: Answer: Two compounds always react in the fixed ratio of their masses and this is called as law of…

Q: What is the mass (in g) of 2.91 x 1028 atoms of Fe?

A: Given: Number of Fe atoms = 2.91 × 1028 atoms.

Q: A mass of 145 g of a certain element is known to contain approximately 3.64 x1024 atoms. What is the…

A: Let the molecular weight of the element is M gm/mol.  Moles = weight/mol. wt.  Or, moles = 145/M  We…

Q: Express your answers to at least 5 significant figures. The mass of one mole of boron is 10.811 g.…

A:

Q: What is the molecular (formula) mass (in AMU) of C 4H 80 2? Key Concept: The molecular mass is…

A: Answer is in next step

Q: Suppose you have a sodium sample weighing 11.42 g. What mass of potassium would you need to have the…

A: Given, Mass of Na =11.42 g

Q: How many moles are there in 2.75 x 10^24 atoms of copper?

A: we know that one mole of copper contain Avogadro's number of atoms Avogadro's number= 6.023 × 1023

Q: How many moles of silver atoms do you have if you have 2.15 × 10²¹ atoms of silver. (The mass of one…

A: Number of moles (n) is given by- n= given mass/molar mass Or n= given no. of particles/Avogadro…

Q: How many moles of atoms are there in 2.12 x 10 43 atoms of Nickel?​

A: 1 mole = 6.022×1023 [ Avogadro's number ] If any metal consists of 6.022×1023 atoms it is said to…

Q: What is the mass in grams of 4.2 x 10^22 atoms of Zn ?

A:

Q: A substance contains 35.0 g nitrogen, 5.05 g hydrogen, and 60.0 g of oxygen. How many grams of…

A: The question is about calculating the mass of Nitrogen in a 169 g sample of the substance -

Q: A pure silver ring contains 4.55×1022 silver atoms. How many moles of silver atoms does it contain

A: A mole of a substance is equal to as many entities (atoms , molecules and ion ) as there are number…

Q: How many grams of aluminum are there in 4.05 x 10²5 molecules of Al½O3?

A: Given:- number of molecules of Al2O3 = 4.05 × 1025 molecules  To calculate :- mass of Al in grams

Q: The atomic mass of aluminum is 26.982u. How many alluminum atoms are in a 4.55g sample of aluminum?

A: Mass of aluminium sample=4.55 g The atomic mass of aluminum =26.982 u Moles of aluminium=4.5526.982…

Q: What is the mass, in grams, of 2.08 × 1024 aluminum (Al) atoms?

A: The question is based on mole concept. We have to determine mass of aluminium present.

Q: What is the mass (in grams) of 6.022*1023atoms of 12C

A: We know that, 1 mol = 6.022 × 1023atoms Thus, we have 1 mol of 12C

Q: 1. What is the mass of 1.78×104 atoms of boron ? grams 2. How many boron atoms are there in 39.7…

A:

Q: Determine the mass in grams of 2.25 x 1021 atoms of copper. (The mass of one mole of copper is 63.55…

A:

Q: What is the mass (grams) of 6.52 x 1018 atoms of gold (Au)?

A: Given that, 6.52×1018 atoms of gold. We have to calculate the mass of that gold. Concept:  We know…

Q: What is the mass in grams of 5.56 x 1023 atoms of arsenic (As) ?

A: 1 mole of As is having atomic mass                                           = 74.9216 g 1 mole is…

Q: What is the mass of 1.6x10^21 argon atoms?

A: Molar mass of Argon is 39.95 g/mol i.e 1 mole of argon = 39.95 g of Argon Number of atoms of Argon…

Q: How many grams of gold (Au; atomic mass = 197.0 g/mol) contains 2.5 x 1020 gold atoms?

A: Number of moles = mass/molar mass  Mass = moles × molar mass  Molar mass of Au = 197.0 g/mol

Q: the element rhenium re has two naturally occurring isotopes 185re and 187re and an average atomic…

A: Mass of sample = 770.0 gMass of Re-187 = 186.956 amuMass of Re-185 = 184.953 amu

Q: In 1.99 g of quartz, how many oxygen atoms are there?

A: Quartz is SiO2 and its molar mass is 60.084gmol-1  So, first calculate the moles of SiO2  moles of…

Q: What is the mass of a sample containing 1.00 mol of atoms, 33% of them N and 67% of them O?

A: The objective of the question is to calculate the mass of a sample containing 1.00 mol of atoms, 33%…

Q: An atom consists of two isotopes, the first with an atomic mass of 15.8967 amu and the second with…

A: Atomic mass of first Isotope = 15.8967 amu Atomic mass of second Isotope = 16.8245 amu Average mass…

Q: Rubudium have two isotopes, 85Rb has mass 84.9117 amu and 87Rb has mass 86.905 amu. If the average…

A: The naturally occurring Rubidium  has two isotopes, therefore both of them are present in Rubidium…

Q: What is the mass in kilograms (kg) of 4.29 X 1024 atoms of palladium?

A:

Q: What is the mass of 3.30 x 1023 atoms of silver, Ag? 25.8 g 59.1 g 85.7 g 197 g 0.549 g

A: We will use formula of mole and mass to get answer. Number of atom = 3.3×1023

Q: How many moles of silver atoms do you have if you have 2.76 × 10²¹ atoms of silver. (The mass of one…

A:

Q: How many grams of sulfur are there in 2.01 atoms of sulfur?

A:

Q: What is the mass of 1.213 × 108 mol S?

A: Given :-  Number of moles of S = 1.213 × 108 mol  To calculate :-  Mass of S

Q: What would the mass be of Gold, if you had 6.02 x 10^24 atoms of

A: GOLD, molar mass of Au = 196.97 g/mol atoms of Au = 6.023 x 1023

Q: How many atoms of nitrogen are there in 5.00 g N?

A: We have to predict the number of atoms of N.

Q: How many moles of silver atoms do you have if you have 5.09 × 10²¹ atoms of silver. (The mass of one…

A: Given: Number of Atoms of Silver = 5.09 × 10²¹  To Determine: Moles of silver atoms

Q: Determine the mass in grams of 4.38 × 10²¹ atoms of chromium. (The mass of one mole of chromium is…

A:

Q: 23 atoms of magnesium? 1. How many moles of magnesium is 5.61 x 10

A: moles of any species is defined as when given mass of species divided by its molar mass

Q: 1x 10 22 atoms of an element weight 1.15 gm. The atomic mass of the element is: 10 amu (b) 2.3 amu…

A: Number of atom= 3.011×1022Weight of element= 1.15 gram Mole is equal to number of atom divide by…

Q: 5) Find the mass of 0.02 moles of K,Cr,O,. 7'

A:

Q: Determine the mass in grams of 7.75 x 1021 atoms of carbon. (The mass of one mole of carbon is 12.01…

A: Given,the mass of one mole of carbon = 12.01 gNumber of carbon atoms = 7.75×1021 atomsHere, we are…

Q: How many moles of calcium atoms do you have if you have 7.35 × 10²¹ atoms of calcium. (The mass of…

A:

Q: cylinder contains 1.475 x 1024 argon atoms. How many moles of argon are there in the cylinder?

A:

Q: what is the mass in grams of 1.49 x 10^17 chromium atoms?

A:

Q: A gold ring contains 3.01 x 1023 atoms of gold, Au. How many grams of gold are in the ring?

A: The number of moles (n) of a substance is calculated by dividing its number of atoms (No) by…

Q: how many grams are in 4.46 x 10 24 atoms of carbon?

A: Number of carbon atoms present = 4.46 x 1024 Atomic mass of carbon is 12 grams Atomic mass means the…

Q: What mass of magnesium contains the same number of particles as there are in 6g of carbon 12

A: Given,  Mass of C = 6g  What mass of magnesium contains the same number of particles as there are in…

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.