How many moles of C are there in a sample that contains 15.9 grams of carbon? How many grams of carbon are there in a sample that contains 4.61 mol of C?  What is the mass of 4.63×1023 atoms of krypton ?  How many krypton atoms are there in 31.9 grams of krypton ?

Q: How many moles of calcium atoms do you have if you have 8.13 × 10²¹ atoms of calcium. (The mass of…

A: One mole of any substance contains 6.023×1023 particles. This is called as Avogadro’s number. The…

Q: How many moles of Al are there in 41.5 grams of Al?

A: Since number of moles of atom = mass of atom / Atomic mass of atom

Q: How many moles of Si are there in a sample that contains 10.4 grams of silicon? How many grams of…

A: 1.Mass of silicon = 10.4g Moles of silicon =?2. Moles of silicon = 4.20 molMass of silicon in grams…

Q: How many moles of iron atoms do you have if you have 8.80 × 10²³ atoms of iron. (The mass of one…

A: 1 mole of a substance contains 6.022×1023 molecules.

Q: How many moles of phosphorus atoms do you have if you have 5.90 × 1022  atoms of phosphorus. ( The…

A: Given: Atoms of phosphorus is 5.90×1022 Mass of one mole of phosphorous is 30.97 g.

Q: How many moles of calcium atoms do you have if you have 2.85 x 1021 atoms of calcium. (The mass of…

A: The Answer to the following Question is given as:

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: How many moles of sodium atoms do you have if you have 8.40 × 10²³ atoms of sodium. (The mass of one…

A: Given number of sodium atoms = 8.40 × 10²³ Number of sodium atoms in one mole = 6.022×1023

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: A sample of the male sex hormone testosterone, C19H28O2, contains 3.58×1021 atoms of hydrogen. How…

A: Given,Testosterone contains 3.58×1021 atoms of hydrogen.

Q: Rubidium has two naturally occurring isotopes. The average mass of Rb is 85.4678 u. If 72.15% of Rb…

A: Given, Average mass of Rb = 85.4678 u Isotope I, Rb-85 : natural abundance = 72.15 %  relative…

Q: How many moles of calcium atoms do you have if you have 4.94 × 10²¹ atoms of calcium. (The mass of…

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

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 moles of iron atoms do you have if you have 5.60 × 10²³ atoms of iron. (The mass of one…

A: We know that 1 mole=6.023 x 10^23 atoms/molecules/ions Given, Number of atoms of iron=5.60 x 10^23

Q: How many moles of calcium atoms do you have if you have 5.60 × 10²¹ atoms of calcium. (The mass of…

A: The question is based on mole concept. We have to calculate moles of calcium.

Q: What quantity in moles of silver atoms do you have if you have 5.99 × 10²¹ atoms of silver. (The…

A:

Q: How many moles of iron atoms do you have if you have 8.00 × 1023 atoms of iron. ( The mass of one…

A: This problem can be solved by knowing the fact that one mole contains 6.022×1023 atoms.

Q: 9. How many grams are in 3.01 x 1023 atoms of carbon?

A:

Q: If you have a sample of 24.31 g magnesium (Mg), which is equal to one mole, how many atoms of…

A: Given that Amount of magnesium (Mg) = 24.31 gram  Which is equal to 1 mole To answer this problem ,…

Q: How many moles of iron atoms do you have if you have 3.70*10^23 atoms of iron. (The mass of one mole…

A:

Q: How many moles of calcium atoms do you have if you have 8.62 x 1021 atoms of calcium. (The mass of…

A: Number of atoms of Ca is given for which number of moles is to be determined.

Q: If you had 21.5 moles of silicon, how many atoms would you expect to have? And If you had 5.69 x…

A:

Q: How many moles of potassium atoms do you have if you have 4.40 × 10²² atoms of potassium. (The mass…

A: The mass of one mole of potassium is 39.10gm.   39.10gm of potassium contain=avogadro number…

Q: How many moles of iron atoms do you have if you have 2.50 × 10²³ atoms of iron. (The mass of one…

A: The number of atoms present in one mole of a substance is equal to Avogadro number.

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

A:

Q: How many moles of calcium atoms do you have if you have 5.65 × 10²¹ atoms of calcium. (The mass of…

A: Mol defination:  Mole in terms of particles:  1 mol = Avogadro no.of particles            = 6.02 ×…

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: how many moles of sodium atoms do you have if you have 7.10x10^23 atoms of sodium. (The mass of one…

A: One mole comprises of 6.022×1023 particles.

Q: 1. What is the atomic mass of copper, Cu ? 2. How many grams are there in 36.34 moles of Cu ? 3. How…

A:

Q: a sample of male testosterone C19H28O2 contains 3.88*10^21 hydrogen atoms. How many atoms of carbon…

A: Given : Number of hydrogen atoms in C19H28O2 = 3.88 X 1021 atoms.

Q: How many ATOMS of phosphorus are present in 8.70 grams of phosphorus triiodide ?  atoms of…

A: Data given: Mass of phosphorus triiodide = 8.70 g Number of molecules of phosphorus triiodide =…

Q: How many moles of sodium atoms do you have if you have 5.60 × 10²³ atoms of sodium. (The mass of one…

A: Given →5.60*1023 atoms of sodium→mass of one mole of sodium=22.99 gone mole sodium atoms mean…

Q: How many moles of calcium atoms do you have if you have 2.82 × 10²¹ atoms of calcium. (The mass of…

A: Since  1 mole=6.023×1023atoms Given number of calcium atoms = 2.82 × 10²¹  This equal to how many…

Q: How many moles of calcium atoms do you have if you have 5.86 × 10²¹ atoms of calcium. (The mass of…

A:

Q: How many moles of calcium atoms do you have if you have 2.46 × 10²¹ atoms of calcium

A:

Q: how many moles of fluorine are present?

A: 1 mol = 6.022 × 1023 atoms  Number of moles = mass/molar mass  Mass = number of moles × molar mass…