Calculate the mass of two atoms of Cr, Mo and W?

Q: How many titanium atoms are in a pure titanium bicycleframe with a mass of 1.28 kg?

A: The number of titanium atoms is in a pure titanium bicycle frame with a mass of 1.28 kg has to be…

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

A: Given -> Moles of NO2 = 15.53 mole

Q: How many grams are in moles of F? Atomic weight of F is=19.00

A: Answer :-  Grams in moles of F = 19.00 g…

Q: How many Cr atoms are there in a 50.1 gram sample of Cr ? atoms

A: Mass of sample Cr = 50.1 g  Number of Cr atoms = ?  Molar mass of Cr atom = 52.0 g/mol  As we know…

Q: How many atoms of Cu are existing in 2.36 g of copper wire?

A: Since molar mass of Cu = 63.546 g/mol Mass of Cu = 2.36 g (given)

Q: the atomic masses of 10B and 11 B are 10.012938 and 11.009305 amu, respectfully. The average atomic…

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Q: How many atoms of neon are present in 1.30 moles of neon?

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Q: 22 11. Find the mass in grams of 2.54 x 10 molecules of H,SO,.

A: Number of molecules of H2SO4 = 2.54 × 1022 molecules. Mass of H2SO4 (in grams ) = ?

Q: a. 1.51 x 1015 atoms of Si to mol of Si

A: Given number of atoms can be easily calculated to moles by using avogadro number.

Q: What mass of sulfur would be in a 124.56 g sample of sodium thiosulfate Na, S,0,?

A: The mass of sodium thiosulfate    is 124.56 g and its molar mass    is 158.11 g/mol.    now we…

Q: How many atoms of vanadium are in 1.28 grams of vanadium ?

A: 1 mole of vanadium contains Avogadro’s number of atoms. The number of mole of 1.28 g of vanadium…

Q: Calculate the % by mass C in C4H8O

A: % by mass of C in C4H8O = (mass of C/mass of C4H8O) × 100%

Q: How many Mn atoms are there in 2.63 moles of Mn?

A: 1 mol consists of 6.022×1023 atoms

Q: How many grams of Sc are there in a sample of Sc that contains 4.91×1023 atoms?

A: The atomic weight of scandium is 45 gram per mole. The number of atoms present in one mole of any…

Q: How many moles of silver are 1.8x10^20 atoms of silver ?

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Q: A toy top has a mass of 32.0 g Cu. How many atoms Cu are in this spinning top, given that the…

A: We know , in 1 mole of any atoms , there is avogadro number of atoms i.e. 6.022×1023 number of…

Q: What mass (in g) does 3.99 moles of Kr have?

A: Given:Number of moles of Kr = 3.99 molesMolecular mass of Kr is known(from the periodic table) =…

Q: what is the mass element of calcium?

A: Mass of an element is represented by A in symbolic representation of element.

Q: An unknown element X has the following isotopes: 25X (80.5% abundant) and 27X (19.5% abundant). What…

A: Given, The natural abundance of isotope I, 25X = 80.5 % The natural abundance of isotope II, 27X =…

Q: How many atoms are there in 0.500 moles of Sodium?

A: The number of moles of sodium = 0.500 mol. The number of atoms present in 1-mole of sodium = 6.023…

Q: A toy top has a mass of 32.0 g Cu. How many atoms Cu are in this spinning top, given that the…

A: Given information: Mass of Cu = 32.0 g Molar mass of Cu = 63.55 g/mol

Q: If the mass percentage of O in a sample is 68% and the total mass of the sample is 4.128 Kilograms-…

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Q: 4. How many atoms of Iodine are contain ed in a sample of Iodine that has a mass of 1.247 x 105 amu?

A: Introduction: An atomic mass unit is a unit used to express the relative maases of atoms.One atomic…

Q: any atoms of cesium are in 10.1 grams ium phosphate? 1

A: Cesium phosphate Cs3PO4 molar mass = 494 g/mol Moles of Cs3PO4=mass/molar mass    = 10.1/494 =…

Q: A toy top has a mass of 32.0g Cu. How many atoms Cu are in the spinning top, given that the average…

A: Given information: Mass of Cu = 32.0 g Molar mass of Cu = 63.55 g/mol

Q: titanium

A: Molar atomic mass of Ti = 47.87 gmol-1  Mass of Ti = 1.00kg = 1000 g  Moles of Ti = ( mass / molar…

Q: Calculate the number of atoms of Fe in a sample with mass = 1899 amu.

A: A sample of Fe of mass  1899 amu.The number of atoms of Fe in a sample is to be calculated.

Q: Calculate the mass of each sample. a. 1.05 × 10²26 atoms of neon, Ne(g)

A: 1 mole of atom = 6.022 × 1023 atoms

Q: -If you had 2.00 x 1024 atoms of Na, how many moles would you have?

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

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Q: How many Kr atoms are there in a 56.7 gram sample of Kr ?

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Q: What is the atomic weight of the element chlorine?

A: Average atomic weight of chlorine element is 35.5 amu. Chlorine atom has two isotopes Cl35 and Cl37…

Q: A 0.632 mol sample of C6H8X2 has  mass of 90.07g identify X indicating the symbol and not the name…

A: The element can be identified by its molar mass. The molar mass of the elements X can be calculated…

Q: How many V atoms are there in a 97.9 gram sample of V ? atoms

A: Mass of sample = 97.9 grams.  Number of atoms of V sample = ?

Q: How many atoms of hydrogen are there in 1 kg of methane (CH4)?

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Q: What is the mass of 0.900 mol of BCl3?

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Q: d. 5.90 mol of Ca to atoms of Ca

A: From mole number or avagadro number we can calculate number of atoms of "Ca".

Q: What is the mass number of Hg from the periodic table?

A: Answer:- Mass number:- It is defined as the total number of proton and neutron or can be defined as…

Q: For 2.577 g of a compound containing only copper and oxygen, Cu,O, a student found that it contained…

A: Answer = 0.07781 mole

Q: Calculate the mass of 700 atoms of nitrogen (N).

A: Given, number of nitrogen(N) = 700 atoms we are asked to calculate the mass of 700 atoms of…

Q: What is the average atomic mass of a mystery substance that is 27.5 at a mass of 37g and 72.5% at a…

A: Given: Mass =37 g  Percentage %=27.5 % Mass =38 Percentage % =72.5% Average mass=?

Q: how many atoms per particle in sulfur(s8)?

A: Atomic mass of sulfur = 32g Molecular mass of S8 =8×32=256g

Q: What is the average mass, in grams, of one Zn atom?

A: Given :- Number of atoms of Zn = 1 atom  To calculate :-  Average molar mass of single atom of Zn…

Q: How many titanium atoms are in a pure titanium bicycle frame with a mass of 1.34 kg ?

A: Given that mass of titanium bicycle frame = 1.34 kg = 1340 g Molar mass of titanium (Ti) = 47.867…

Q: How many atoms are in 5.80 moles of He?

A: Given : Moles of He = 5.80 mol.

Q: What is the mass of 2.561 mol of gold?

A: A pinch of salt contains as many particle of NaCl that cannot be counted as such. The unit Mole (…

Q: 49.4 g of Cr represents how many atoms?

A: Number of atoms = moles of Atoms X Avogadro's number where Avogadro's number = 6.022 X 1023  And…

Q: How many moles of gold are 8.5 x 1024 atoms of gold?

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Mass Spectrometry

This process is an instrumental method in which a sample is changed to fast moving positive ions by electron bombardment. The charged particles vary due to their different mass to charge ratio and are estimated with the help of this difference. It is also called mass spectroscopy.