Question

In: Chemistry

Use Avagadros number to calculate the number of molecules of H2S, the number of atoms of...

Use Avagadros number to calculate the number of molecules of H2S, the number of atoms of H, and the number of atoms of S, in 5.25 moles of H2S. Show all work and keep track of units and significant figures.

Solutions

Expert Solution

H2S moles = 5.25

1) calculation for H2S molecules

1 mole of H2S contain 6.023 x 10^23 molecules

         5.25 moles H2S contain howmany molecules ?

H2S molecules = 5.25 x 6.023 x 10^23

   H2S molecules      = 3.16 x 10^24

H2S -------------------------->   2 H             + S

5.25                                  2 x 5.25                     5.25

5 .25 moles H2S contain   10.5 moles H and 5.25 moles S

2) calculation for H atoms

1 mole contain --------------------------> 6.03 x 10^23 atoms

10.5 mole -------------------------------?  

H atoms = 6.023 x 10^23 x10.5

                = 6.32 x 10^24

3) calculation for S atoms

1 mole contain --------------------------> 6.03 x 10^23 atoms

5.25 mole -------------------------------?  

S atoms = 6.023 x 10^23 x 5.25

                =3.16 x 10^24


Related Solutions

Calculate the number of oxygen molecules and the number of oxygen atoms in 30.5 g of...
Calculate the number of oxygen molecules and the number of oxygen atoms in 30.5 g of O2. Enter your answers in scientific notation. Calculate the mass of 9.31 x 1014 SO3 molecules.  Enter your answers in scientific notation
Learning Goal: To use Avogadro's number to convert between microscopic units of atoms and molecules to...
Learning Goal: To use Avogadro's number to convert between microscopic units of atoms and molecules to the macroscopic world of chemical experiments. A mole is a unit of matter that represents a known number of particles that is large enough to be weighed on a laboratory balance. One mole of substance contains 6.022×1023 formula units, as shown in the following unit factor: 6.022×1023 formula units1 mol substance The value 6.022×1023 is called Avogadro's number. The term formula unit is a...
1.Calculate the number of molecules in 0.750 mol of methane, CH4. 2. Calculate the number of...
1.Calculate the number of molecules in 0.750 mol of methane, CH4. 2. Calculate the number of moles in 15.0 g of oxygen gas, O2. 3. Calculate the mass of 115 molecules of carbon dioxide 4. Calculate the number of molecules in 2.25 g of sulfur hexafluoride. 5. Calculate the number of carbon atoms in 1.50 g of butane, C4H10. 6. Calculate the mass of calcium chloride that contains 3.20 × 1024 atoms of chlorine. 7. Calculate the number of water...
To calculate the number of atoms in a face centered cubic cell?
To calculate the number of atoms in a face centered cubic cell?
Calculate the diameter of a lead sphere that contains the same number of atoms as a...
Calculate the diameter of a lead sphere that contains the same number of atoms as a 2.0 cm diameter aluminum sphere.
Part A Calculate the number of C atoms in 0.602 mole of C. Part B Calculate...
Part A Calculate the number of C atoms in 0.602 mole of C. Part B Calculate the number of SO2 molecules in 6.82 moles of SO2. Part C Calculate the moles of Fe in 2.34x1022 atoms of Fe. Part D Calculate the moles of C2H6O in 3.97x1024 molecules of C2H6O.
Give the symmetry number for each of the following molecules a)Co b)O2 c)H2S d)SiH4 and e)CHCl3.  ...
Give the symmetry number for each of the following molecules a)Co b)O2 c)H2S d)SiH4 and e)CHCl3.   Also explain please and include diagram if possible
For the given elements, calculate the number of atoms in 1.00 gram of that element. How...
For the given elements, calculate the number of atoms in 1.00 gram of that element. How many atoms of magnesium are in 1.00 gram? How many atoms of iron are in 1.00 gram? How many atoms of argon are in 1.00 gram?
.Calculate the number of copper atoms in a 63.55 g sample of copper. .What is the...
.Calculate the number of copper atoms in a 63.55 g sample of copper. .What is the mass in grams of 0.509 moles of AlCl3? .Which of the following 100.0 g samples contains the greatest number of atoms? a.  Magnesium b.  Zinc c.  Silver
Calculate the number of atoms per cubic meter in Cobalt (Co) (units atoms/m3). Write your answer...
Calculate the number of atoms per cubic meter in Cobalt (Co) (units atoms/m3). Write your answer with 4 significant figures
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT