If a sample of lithium contains 2.50x10* atoms of lithium-7 and 2.00×10 atoms of lithium-6, what is the percentage of lithium-6 atoms in the sample?

Q: 16.The atomic masses of * Cl (75.53 percent) and "Cl (24.47 percent) are 34.968 and 36. 956 a.m.u.,…

A: Introduction: Chlorine belongs to group 17 elements with atomic number 17 and mass 35.45 amu. Group…

Q: Carbon tetrachloride has a chlorine-to-carbon mass ratio of 11.8:1 If a sample of carbon…

A: CCl4 is carbon tetrachloride. Mass ratio of Cl:C is 11.8:1  It means 11.8 g Cl per 1 g C

Q: How many silicon atoms are there in 1.00g of silicon?

A: Given: Mass of silicon=1.00 g Mass of 1 mole of silicon=28.0855  g

Q: What is the mass of 5.10*10^21 platinum atoms?

A: A mole represents 6.022x1023 particlesThe 6.022x1023 Number is also known as Avogdro's Number .It…

Q: How many grams of copper that consists of 1.54 x 1024 atoms of copper?

A: To convert atoms to grams,  Step I  -  Convert atoms to moles                  1 mol  = 6.022 × 1023…

Q: How much does 4.28 x 10 21 atoms of Nickel weigh?

A: We know that, one mole of any substance contains 6.022 × 1023 atoms. We can determine the weight by…

Q: what is the mass, in grams, of 3.01 x10^23 copper atoms

A: Number of copper atoms = 3.01 × 1023  We need to determine mass of copper.

Q: Calculate the mass, in kg, of sample. 8.15x10^27 nickel atoms

A: The mass of sample. 8.15x10^27 nickel atoms is to be calculated

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: A mass of 41.6 g of an element is known to contain 6.59 x 1023 atoms. What is the atomic mass of the…

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Q: What is the mass of 4.97×1021 platinum atoms?

A: Mass has many units. Its SI unit is Kg. On atomic level, atomic mass unit, molar mass, molecular…

Q: Suppose that atomic masses were based on the assignment of a mass of 12.000 g to 1 mol of carbon,…

A: SOLUTION: Step 1: One Dalton is defined as one-twelfth the mass of one mole of carbon-12 isotopes.…

Q: How many grams would 4.15 x 1021 atoms of Pb weigh?

A: Answer

Q: A 20.0 g sample of an element contains 3.89 x 1023 atoms.

A: Given:-  Number of atoms = 3.89 × 1023atoms Mass of sample = 20.0g

Q: You are given 1.0g samples of Iron, Silicon, and Lithium. Which of the three samples will contain…

A: Given: 1 g sample of Iron, silicon and lithium To find: Sample containing largest number of atoms…

Q: Verify that the atomic weight of lithium is 6.94, given the following information: 6 Li, mass =…

A: Given,  Percent abundance of 6Li = 7.50% Mass of 6Li = 6.015121 amu Percent abundance of 7Li =…

Q: Calculate the relative percent abundance of 6Li given the following information: mass of 6Li =…

A: Given mass of 6Li = 6.01512 umass of 7Li = 7.01699 u

Q: What is the mass in grams of 6.022 * 1023 N atoms of mass 14.01 amu?

A: To determine the mass in grams of 6.022x1023 N atoms of mass 14.01 amu Given that: Mass of each atom…

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

A:

Q: If the density of lead is 11.34 g / a.m., how many atoms are there in a piece of lead 2.5 cm wide,…

A: To calculate the number of atoms in the sample, we must have the number of moles of the substance.…

Q: How many hydrogen atoms are there in 8.75 g of C,H,NO,? Select one: a. 23 4.79x 10 b. 3.22x 1023 с.…

A: Given: Mass of C2H7NO2 = 8.75 g Molar mass of C2H7NO2 = 77.08 g/mol

Q: What mass of nickel would contain 5.66 x 1021 atoms?

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Q: What is the mass of 6.02 x 1023 Cu atoms?

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Q: 28) 8.42 x 1027 atoms of tin 29) 6.39 x 1018 atoms of sulfur

A: Given  8.42 × 1027 atoms of tin  6.39 × 1018 atoms of sulfur  5.99 × 1030 molecules of SiO2

Q: Calculate the mass, in kg, of sample.  5.48x10^29 lithium atoms

A: Molar mass of lithium is 6.94 g/mol 6.023 x 1023 atoms have mass = 6.94 g of lithium

Q: The mass of an atom of hydrogen is 1.673 x 10-24 g. How many atoms are in a 10.8 g sample of…

A: Since mass of 1 H atom = 1.673 x 10-24 g Hence assuming in 10.8 g sample of hydrogen we have n…

Q: White sand is made of silica (silicon dioxide, or SiO2), which has a density of 2.20 g/cm3. How many…

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Q: Calculate the mass, in kg, of sample.  7.55x10^26 cadmium atoms

A:

Q: How many copper atoms are present in a 2017 penny with mass 3.10 g? Modern pennies are 97.5% Zn and…

A: we have a penny of mass 3.10 gram. and it's also mentioned that in  a modern penny the percentage of…

Q: If there are 8.59 x 1022 molecules of NaCl in a salt shaker, what is the mass of NaCl?

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Q: How many moles are there in 2.17 x 1023 atoms of Au?

A:

Q: How many helium atoms are there in a helium balloon containing (1.8x10^0) kg of helium?

A: Given :- mass of He = 1.8 × 100 kg  To calculate :- number of atoms of He  number of moles =…

Q: What is the mass of one atom of I? O 6.641 x 10-23 g O 4.745 x 10-22 g O 2.107 x 10 22 g O 3.443 x…

A: To determine the mass of 1 atom of I, do the following : 1) Determine molar mass of the substance.…

Q: How many moles of neon would there be in 7.59 x 1025 neon atoms?

A: Given that : Atoms of neon = 7.59 x 1025 atoms Moles of neon =?

Q: What mass (g) would 4.10 x 10^16 atoms Mg have

A: We have to determine the mass of 4.10×1016 atoms of Mg.

Q: White sand is made of silica (silicon dioxide, or SiO2), which has a density of 2.20 g/cm3. How many…

A: The question is based on mole concept. We have been given diameter of the silicon atom. we have to…

Q: 13) If you measured a mass of 245 g of Iron, you would have atoms Fe. * O 4.39 O 2.64e24 O 8.24e27 O…

A: To calculate the number of atoms or molecules of an element we must have the number of moles of that…

Q: 6. What is the mass of 6.20 x 1025 atoms of sulfur?

A: We have 6.2*1025 atoms of sulphur , we have to calculate the mass of given atoms of sulphur.

Q: White sand is made of silica (silicon dioxide, or SiO2), which has a density of 2.20 g/cm3. How many…

A: Given : Density of silica = 2.20 g/cm3  And diameter of grain of sand = 0.455 mm

Q: Calculate the number of atoms in a 2.33 x 10' g sample of silicon.

A: Avogadro’s number or Avogadro’s constant relates the molar mass and the physical mass of an element,…

Q: Calculate the number of atoms in a 4.06 x 10 g sample of calcium. number of atoms:

A: Given: The mass of the sample of calcium (Ca) is 4.06 x 103. The molecular weight of calcium (Ca) is…

Q: How many atoms of hydrogen are there in a sample of (9.60x10^2) grams of CH4(g)?

A: The number of moles of a substance is defined as the ratio of mass to molecular mass.  So, The…

Q: What is the mass of 4.50 x 1044 Cu atoms?

A: Given :- number of Cu atoms = 4.50 × 1022 atoms  To calculate :- mass of Cu (in g)

Q: Calculate the mass, in kg, of sample. 1.22x10^27 manganese atoms

A:

Q: How many grams of lithium are in 8.52 x 1023 atoms?

A: 1 mole of any species contains Avogadro's number of atoms or molecules. i.e, 6.023 × 1023  Molar…

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

A:

Q: 1. How many moles of tungsten atoms are there in 4.8 x 1025 atoms of tungsten?

A: Since you have asked multiple question,as per our company guidelines we are supposed to answer the…

Q: An element X has two common isotopes: X-57 and X-59. If the average atomic mass of element X is…

A: An element has two isotopes : X-57 and X-59 Average Atomic mass = 58.876 amu

Q: Find the mass of 2.45 X 1023 molecules of Ca(OH)2? Use: Ca = 42.0g, H = 1.25g and O = 15.7g as…

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Q: What is the mass of 4.91×1021 platinum atoms?

A: Given:Number of platinum atoms = 4.91×1021.Molar mass of platinum = 195.084 g/mol.

Atoms and Molecules

An atom is the smallest unit of an element that possesses all the properties of that particular element. Molecules are the smallest unit of a substance that possess all the properties of that particular substance.