Particles
The number of atoms in 1 mole of He
What is 6.02x1023 atoms?
The number of moles of Mg equal to 48.62 grams Mg
What is 2.00 moles Mg?
48.62 g x (1 mol)/(24.31 g)
The mass of a mole of NaCl is the ____. a.molar mass b.mass c. atomic mass d.gram atomic mass
What is "a"
Which has more atoms
1 mole of argon
2 moles of neon
or 3 moles of helium?
How many moles of solute are present in 1.50 L of 0.240 M Na2SO4
mm=119.05
0.360 moles
The number of moles represented by 1.204 x1021 atoms of Ne.
What is 2.0x10-3 (0.0020) mol Ne?
(1.204 x 10^21 atms) x (1 mol)/(6.02 x 10^23 atms)
The mass of 0.50 moles of Calcium
What is 20 g Ca?
0.50 mol x (40 g)/(1 mol)
What is the molar mass of AuCl3?
What is 303.6g of AuCl3
Which has the smallest mass?
1 mole Ar
2 mol Ne
3 mol He
A Saline solution contains .90 g NaCl in 100. mL of solution, what is the molarity of the solution?
mm=58.44
0.15M
The number of moles in 4.45 x 1035 atoms of carbon
What is 7.39 x 1011 moles of Carbon?
4.45 x 1035 atoms x (1 mol)/(6.02 x 10^23 atms)
The mass of 3.0 moles NF3?
What is 213.03 g NF3?
3.0 mol x (71.01 g) / (1 mol)
What is the molar mass of (NH4)2 CO3 ?
What is 96g
How many particles are in a mole?
What is 6.02 x 10^23
You dissolve 30.0 g NaCl in 1.50 L water. What is the molarity of this solution?
0.342 M
The number of atoms found in 14 grams of Silicon.
What is 3.01 x 1023 atoms Si?
(14 g) x (1 mol)/(28.09 g) x (6.02 x 10^23 atms)/(1mol)
The number of moles equal to 103.87 grams of Br2.
What is 0.65 moles Br2?
80.0 g x (1 mol)/(159.80 g)
What is the mass in grams of 5.90 mol C8H18 ?
What is 673g
How many atoms are in 3.5 moles of arsenic?
What is 2.1 x 10 ^24 atoms of arsenic
What mass of CaCl2 is needed to make 250. mL of 2.0M solution
mm=110.98
55 g
The number of molecules found in 5.6 L of O2.
What is 1.51 x 1023 molecules O2
5.6 L xx (1 mol)/(22.4 L) xx (6.02 x 10^23 moleculs)
The mass of 10 L CO2 (gas) at STP
What is 19.65 g CO2?
10 L x (1 mol)/(22.4 L) x (44.01 g)/(1 mol)
What is the number of moles in 432 g Ba(NO3)2 ?
What is 1.65 mol
What is the number of atoms of beryllium atoms in 36 g of Be?
What is 2.41 x 10^24 atoms Be
How many mL of 1.25 M solution can be made using 8.0 g NH4NO3?
mm=80.06
80. mL