A platinum block is made with 0.017 mole of the metal. How many platinum atoms are there In the block? What is the mass of the block?

Q: Determine the mass, in grams, of 0.800 moles of Pb (1 mol of Pb has a mass of 207.2 g).

A: Given : Moles of Pb = 0.800 mol And mass of 1 mole of Pb = 207.2 g

Q: Calculate the mass in grams of 0.504 for mol of titanium

A: We know that, moles of a substance can be expressed as,

Q: What is the mass, in g, of 15.0 mol of silver?

A: A mole corresponds to the mass of a substance that contains 6.023 x 1023 particles of the substance.…

Q: Determine the number of atoms in 30.0 g of Ne.

A: One mole of any species contains avagadro number of atoms, molecules and ions.

Q: Which has the smaller mass, 1 mole of He atoms or 4 moles of H atoms?

A: Molar mass of He = 4.003 g/molMolar mass of H = 1.007 g/mol

Q: Calculate the mass % of O in beryllium perchlorate.

A: We have to calculate the oxygen % in beryllium perchlorate.

Q: A compound has the chemical formula CaX2, where X is an unknown nonmetal. The percent by mass of Ca…

A: Percentage by mass of compound means if total compound is 100 g then that component has mass…

Q: A lead fishing weight contains 0.12 mol of lead atoms. Whatis its mass?

A: Given data contains, Moles of lead atoms is 0.12 mol. The molar mass of lead atoms is 207. 2 g/mol.

Q: What is the mass of 1 mol of Ca atoms to three significant figures?

A: Moles of particular compound represent the ratio of its mass and its molar mass. It is represented…

Q: A 70 gram sample of Mg is equal to how many moles of the metal? What is the mass of substance in a…

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Q: Aluminium has a density of 2.70 g/cm3. How many moles of aluminum are in a 13.2 | cm block of the…

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Q: The mass in grams of one argon atom

A:

Q: Aluminium has a density of 2.70 g/cm. How many moles of aluminum are in a 13.2 cm block of the metal…

A: We have density as 2.7 g/cm3 , we have to calculate the moles of Al in 13.2Cm3 of Al.

Q: given a 81.9 mol sample of Ne, how many atoms are present?

A: 6.023 × 10^ 23 is called Avogadro's number. One mole of any substance contain Avogadro's number of…

Q: If a student weighs 23 g of aluminum and needs twice as many atoms of magnesium as she has of…

A: Mole is the amount of the substance that contains the same number of particles or atoms or…

Q: An experiment requires that enough XeOF4 be used to yield 19.2 g of fluorine. How much XeOF4 must…

A:

Q: Diamonds are a crystalline form of pure carbon, and their mass is measured in units of carats (1…

A: Given: Mass of diamond = 84.37 carat And 1 carat = 200 mg = 0.200 g…

Q: Gold, known as the king of metals is used in production of coins and jewelries. How many atoms of…

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Q: How many atoms are present in (6.78x10^1) g of an element with the following molar mass.…

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Q: How number of F atoms in 2.62 moles of F2?

A:

Q: Molybdenum (Mo) is element 42 on the periodic table. A sample contains 7.31x1022 atoms of Mo.…

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Q: Which has more atoms, 10.0 mol of C or 10.0 mol of Ca?How many atoms does each have?

A: According to Avogadro: 1 mole of a substance contains=6.022×1023molecule/atom/ions

Q: A sensitive electronic balance candetect masses of 1 × 1 0 -8 g. How many atoms of silverwould be in…

A: In order to calculate the number of atoms of an element present in a given amount we first need to…

Q: What is the mass of 1 mol of S atoms to three significant figures?

A: Mass of 1 mol of any atom is equal to its atomic weight.

Q: What number of moles represents 3.0 × 1023 atoms of sodium?

A: Given  Number of atom of Sodium = 3.0 × 1023 atom  Number of mole = ?

Q: 0.933 g sample of Nickle metal is heated in the presence of nitrogne gas forming 1.081 grams of a…

A: In this question, we want to determine the moles of Nitrogen gas. How we can determine, you can see…

Q: Calculate the mass of 500. atoms of iron (Fe).

A:

Q: Determine the mass, in grams, of 0.330 moles of Pb (1 mol of Pb has a mass of 207.2 g).

A: The given moles of Pb can be converted to mass by using the formula given below as; Mass = Moles ×…

Q: How many atoms of sulfur are there in 0.0120mol of S, molecules?

A: 1 mol = 6.22 × 1023 atoms  1 mol S8 = 8 mol S atoms

Q: Consider a sample of aluminum nitrate that contains 1.72 × 10²⁴ atoms of nitrogen. What is the mass…

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Q: Consider a drop of Mercury. A chemist obtained its mass from which she showed that the drop…

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Q: Convert between moles and numbers of atoms. A sample of lithium contains 2.24x1025 Li atoms. What…

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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: 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: 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: The number of atoms in 25.7gAl?

A: The number of atoms in 25.7gAl are

Q: What is the mass of 1.00 × 1024 aluminum atoms in grams, how do I solve this problem please

A:

Q: How many moles of Mg are there in a sample of Mg that contains 1.36x1024 atoms? moles

A: Given Atoms of Mg = 1.36 x 1024 atoms

Q: How many atoms are present in a 0.300-mole sample of gold?

A: The number of molecules from the number of moles of a compound can be determined by Avogadro's…

Q: Which sample contains the greatest number of atoms. A sample of Li that contains 3.12×1024 atoms or…

A: Avogadro's  number is a proportionality factor and gives the number of atoms, molecules or ions in…

Q: An antibiotic contains 8.82% of sulfur. If there is/are 1 atom(s) of sulfur in the antibiotic, what…

A: Given: % of S in antibiotic=8.82 % Number of S atoms=1 To find: Molar mass of antibiotic

Q: determine the number of atoms of 23.64g of Ce

A: Given, mass of Ce = 23.64 g Molar mass of Ce = 140 g.mol-1

Q: A sample of carbon (C) contains 4.74× 1021 C atoms. How many moles of carbon are present in the…

A: Number of moles = Number of atoms/N Where, N = avogadro number                  = 6.0224 × 1023

Q: Calculate the average mass of 500. atoms of iron (Fe).

A: Atomic mass of one iron atom = 55.845 u molar mass = 55.845 gm/mol Use Avogadro's number to divide…

Q: How many grams of the insecticide calcium chlorate must be measured if a sample is to contain 5.79 g…

A: Formula of calcium chlorate = ca(clo3)2 Molecular mass of calcium chlorate is 207g

Q: Calculate the mass of 500 atoms of iron (Fe).

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

Q: Calculate the mass of 400. atoms of sulfur (S)

A: Given: Number of atoms of S = 400 atoms.

Q: Calculate the mass in 20.0 moles of He.

A: The unit used to measure the amount of the substance is the mole. Given: Moles of He = 20.0

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.