molar mass
Mole-Gram & Gram-Mole and beyond
mole-atoms/particles/molecules
Mole, isotopes and ions
conversion factors and others
100
what is a molar mass?
What is how much one mole of a substance weighs in gram.
100
This is the number of grams in 0.35 moles of O2?
What is 11.2 grams?
100
This is the number of moles for
1.807*10^24
atoms of Fe(s)
What is 3 moles?
100
What is Avogadro's #
6.02 x 1023
100
what conversion factor do you use when you are converting mole to # of atoms?
(6.022 * 10^23)/(1 mol)
200
This is the molar mass for H2S(g)
What is 34.08 g/mol ?
200
This is the number of moles in 150 grams of KF
What is 2.58 moles?
200
How many Au atoms are there in 2.3 mole of Au atoms?
What is
1.38 * 10^24
atoms
200
Given the mass spec of isotopes seen in the picture, what would be the element?
what is Zr.
200
what conversion factor do you need to use if you are going from converting grams of carbon to # of moles of carbon?
(1mol)/(12.01 grams)
300
This is the molar mass for molecular nitrogen, N2(g)
What is 28 g/mol?
300
This is the number of grams in 0.25 moles of CaCl2?
What is 27.745 grams?
300
This is the number of moles of C for
1.26*10^23
atoms of C
What is 0.21 moles?
300
How many atoms are in 1 mole of silver?
6.02 x 1023 atoms of Silver
300
what conversion factor do you use when you what to convert # of molecules to # of moles?
what is
(1 mol)/(6.02xx10^23)
400
How many moles of H's do we have if we have 105 g of H2S?
What is 6.16 moles.
400
This is the number of atoms in 7.5 grams of Na?
What is 1.96 x 1023 atoms
400
This is the number of atoms of O for 2 mole of CO2
What is
2.408 * 10^24
atoms of C?
400
Given the information below, what is the average atomic mass of chlorine?
What is 35.46 amu
400
what is the unit for molar mass?
g/mole
500
If I have 2.5 moles of an unknown gas and it weighs 209.5 g, what is the molar mass of the unknown gas?
What is 83.8 g/mol
500
You have a cube made of Al with the length of a side to be 2.1 cm. If the density of Al is known to be 2.7 g/cm3, how many Al atoms do we have in the cube?
What is 5.6 x 1023 atoms
500
when you have 0.05 moles of CH4. How many atoms of H do you have?
What is
3.011*10^22
atoms of H?
500
Given an atom shown below, what happen to the neutral atom regarding electrons the atom to be this?
What is lost 2 electrons.
500
How many kids does Ms. Kim have? And what grades are they?
She has two kids one a senior in college and another one senior in high school.