the isotope Si-28 has a mass of 27.977amu .Calculate the number of moles in 14 grams of Si-28

Q: Tin, element 50 on the periodic table, has 10 stable isotopes. 117^Sn makes up 7.687% of naturally…

A: Using the formula moles of Sn117 is calculated as,

Q: Counting Atoms Fill in the table Pb C CI Mass (g) 0.543 1.834 Molar Mass g/mol) 0.685 Moles Total…

A: We can solve these questions by knowing some of the basic mole concepts, like conversion of number…

Q: What is the mass of 3.66 moles of N2 ?

A: Given : number of moles of N2 = 3.66 mol  To calculate :- mass of N2 (in g)    Number of moles =…

Q: How many moles of Ar are in 9.50 x 1023 atoms?

A: Given :-  number of atoms of Ar = 9.50 × 1023 atoms  To calculate :-  number of moles of Ar

Q: 1. Calculate the mass in grams of a single oxygen molecule, 02.

A: Molar mass of O2 is 32.0 g/mol  We have to calculate here mass of 1 molecule of oxygen i.e. O2

Q: How many moles of oxygen atoms are there in 15. 53 moles of N02?

A: Given -> Moles of NO2 = 15.53 mole

Q: A brass alloy contains 78.9% copper, Cu, by mass with the remainder of the alloy being zinc, Zn.…

A: We have to predict the moles of Zn and atoms of Zn.

Q: How many moles are in 38.9 of Al? Atomic Weight of Al= 26.98

A:

Q: 5 How many moles of O atoms are there in 1 mole of magnesium sulfate heptahydrate? А. 7 В. 11 С. 4…

A: Given; 1 mole of magnesium sulfate heptahydrate  Number of moles of oxygen atoms = ? Note: Chemical…

Q: ow many moles of H2O does 1.2 x 1024 molecules represent?

A: Given,  1.2 x 1024 molecules of H2O

Q: Calculate the mass CARBON in 0.0299 moles of C6H12O6.

A: A pure compound is that which contains its constituent atoms in fixed ratio by mass.C6H12O6  is a…

Q: How many moles of silver atoms do you have if you have 4.09 x 1021 atoms of silver. (The mass of one…

A: Given:- Number of atoms of Ag=4.09 x 1021 to calculate :- Number of moles of Ag.

Q: (Calculate the number of grams in one mole of CaS04.7H20, (Ca = 40, S=32, 0=16, H=1 .A g/mol 136 .B…

A:

Q: Does a mole of Ag (107.9 g) contains the same number of atoms as a mole of Na (22.99g).

A: You have given one mole of both Ag and Na.

Q: 5.5×10^24

A: Please find the file attached for explanation

Q: Calculate the number of atoms in a 2.09×1032.09×103 g sample of strontium.

A: Calculate the number of moles of strontium (Sr):

Q: Determine the mass, in grams, of 0.290 moles of I (1 mol of I has a mass of 126.90 g).

A:

Q: Calculate the number of moles of 5.65*10^15 atoms of  ^3H

A: The SI unit or the measure for the amount of substance is called Mole. “1 mole is equal to Avogadro…

Q: Determine the number of atoms in 47.0 grams of vanadium, V. (The mass of one mole of vanadium is…

A: Number of mole(n)= weight(g)/(molar mass in g/mol) weight of Vanadium=47.0 g Atomic mass of…

Q: How many atoms of carbon are combined with 6.89 moles of hydrogen atoms in a sample of the compound…

A: In ethane C2H6 , 2 moles of carbon are combined with 6 moles of hydrogen.

Q: Determine the mass (in grams) of neon that contains: a) 3.44 moles of Ne _____g Ne b) 5.13…

A: Avogadro's  number gives the number of atoms, molecules or ions in one mole of the substance and it…

Q: 1. Calculate the number of grams in one mole of CaSO,7H2O? (Atomic weight Ca-40 ,S=32 ,0=16 ,H-1).

A: Mole concept: The number of molecules or atoms present in the one mole of the substance is equal to…

Q: How many atoms of nitrogen are in 3.50 moles of N?

A: Given : Moles of N = 3.50 mol.

Q: X represents a nonmetal atom with an atomic mass of 107.91 amu.  Calculate the number of grams of…

A:

Q: 4. Complete the following table Mass Moles Particles 3.65 moles Mg 29.54 g Cr 3.54 x 1025 atoms P…

A: Mass = Molar mass * Moles The no of particles in 1 mole = 6.023*1023

Q: Determine the number of atoms of Cin 26.9 grams of C12H22O11.

A: Sucrose is a disaccharide sugar and has a molecular formula C12H22O11. The molecular mass (M) of…

Q: Popol learns in his biology class that human body is approximately 9.5% carbon. How many moles of…

A: Given 9.5% mass percentage. Using this wa can calculate mass of carbon and then moles.  Further…

Q: Find the total number of atoms in a sample of cocaine hydrochloride, C17H22CINO4, of mass 23.5 mg.

A: Avogadro's  number gives the number of atoms, molecules or ions in one mole of the substance and it…

Q: lar mass of 316.29 g-mol and the following compos mass % 39.17% 60.83% rmula of X.

A: %mass of P = [ ( x • mass of P ) / ( molar mass of Compound X) ] • 100  39.17 / 100 = ( x • 31gmol-1…

Q: w many moles of calcium atoms do you 1021

A: Given, No. of atoms = 6.22×1021 atms To calculate the number of moles of calcium.

Q: How many atoms of Pt are present in 2.53 moles of Pt?

A:

Q: How many Ge atoms are there in 3.96 moles of Ge?

A: The formula we are going to use is Number of atoms of any element = number of moles X Avogadro's…

Q: THE moles of Fe in a sample containing 5.72x10^21 atoms of Fe

A: Given 5.72x1021 atoms of Fe

Q: Determine the mass, in grams, of 0.130 moles of I (1 mol of I has a mass of 126.90 g).

A: A mole is thus the mass of a compound in grams that equals the masses of the elements that is…

Q: 127: An iron ore contains 38% Fe203 by mass. What is the maximum mass of iron that can be recovered…

A: 127. Given information, An iron re contains 38% Fe2O3 by mass Mass of iron ore = 10.0 kg

Q: How many atoms are in 5.90 moles of selenium (Se)? x 10 atoms

A: Given : Moles of Se = 5.90 mol.

Q: calcuya te 6011owing (a) ob molecues in 0•250 moles ob NH3 Num ber un

A: According to mole concept, 1 mole of any substance is equal to the Avogadro number (6.022 × 1022)…

Q: Calculate the mass of 7.98x10 molecules of Zinc 27

A:

Q: The Avogadro number is defined as A The number of electron in 12g of C-12 substance B The number of…

A: The question is based on the concept of avogadro  number. we have to correctly identify the…

Q: 1.Calculate the mass of the following numbers of atoms =(3.01 = 10^21)atoms of cobalt

A: The question  is based on the mole concept. one mole of a compound contains avogadro number of…

Q: A 21.37 gram sample of an unknow element contains 0.3267 moles what is the identity of the element

A:

Q: Determine the number of atoms in 33.0 grams of vanadium, V. (The mass of one mole of vanadium is…

A: Given is,  Mass of vanadium = 33.0 g Molar mass of Vanadium = 50.94 g/mol

Q: How many moles are in 130 gram of N?

A: Given :-  Mass of N = 130 g  Atomic weight of N = 14.01 g.mol-1  To calculate :-  Number of moles of…

Q: Mass of ground pill Volume of KMNO, Moles of KMNO, Moles of Fe2+ Moles of FeSO, • 7H,O Mass of FeSO,…

A: Given: Molarity of KMnO4 = 0.0114809 M Balanced reaction : MnO4− + 5 Fe2+ + 8 H+ → Mn2+ + 5 Fe3+ + 4…

Q: 2. Calculate the number of atoms in:   b) .23 mole gold, Au

A: Atoms are the smallest unit or the basic units of matter. It defines an element. Gold is an element…

Q: Calculate the number of atoms in 16 g of Si-28. The isotope Si-28 has a mass of 27.977 amu. 0.57 mol…

A:

Q: How many moles of boron, B,B, are in 1.69×1024 B1.69×1024 B atoms?

A: Consider the given information is as follows; Number of boron (B) atoms = 1.69×1024           Moles…

Q: How many atoms of strontium are in 3.33x10-6 moles

A: According to the mole concept, there is 6.022×1023 number of atoms in 1 mole of an element. In this…

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.