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Molar Conversions: Atoms, Moles, Mass, and Volume, Schemes and Mind Maps of Chemistry

Kent State University Kent State University (KSU) - Trumbull CampusChemistry

Conversions between moles, mass, and volume for various chemical compounds. It includes conversion factors for atoms to moles, moles to mass, moles to volume (gas at stp), and mass to volume. Users can find the number of atoms in various molecules, the molar mass of different elements and compounds, and the number of moles in given masses. The document also includes calculations for the mass and volume of various gases at stp.

Typology: Schemes and Mind Maps

2021/2022

Uploaded on 09/12/2022

jdr
jdr 🇮🇹

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!
Simple!Molar!Conversions!
Name:&__________________________&
Date:&_________________&
&
Conversions!
Conversion!Factor!
Moles&ßà&#&of&particles&
6.02&x&10&23&particles&
or&
1&mol&
1&mol&
6.02&x&10&23&particles&
Moles&ßà&Mass&
(molar&mass)&g&
or&
1&mol&
1&mol&
(molar&mass)&g&
Moles&ßà&Volume&(gas&@&STP)&
22.4&L&
or&
1&mol&
1&mol&
22.4&L&
g&ß&à&mg&
1&g&
&
1000&mg&
1000&mg&
1g&
L&ß&à&mL&
1&L&
&
1000&mL&
1000&mL&
1L&
&
1.&How&many&atoms&are&contained&in&each&of&the&following?&
a) CH3CO2H&
b) NH4Cl&
c) (CH3)2CO&
d) (NH4)2SO4&
e) C15H22O6N2S&
f) Ni(H2O)4(NH3)2Cl2&
&
2.&What&is&the&molar&mass&of&each&of&the&following?&
i) CH3COOH&
j) CH3CH2CH2CH3&
k) Ni(H2O)2(NH3)4Cl2&
l) Al2(SO4)3&
&
3.&How&many&moles&are&in&each&of&the&following?&
a) 5.00&g&C10H8&
b) 525&mg&of&K3PO4&
c) 6.00&L&NO3F&at&STP&
d) 1.00&mL&of&O3&at&STP&
e) 4.55&x&1012&atoms&of&Pt&
f) 6.02&x&1016&molecules&of&PCl5&
&
4.&Calculate&the&mass&of&the&following:&
a) 1.00&mol&NH4Cl&
b) 4.50&mol&of&NH4Cl&
c) 3.25&mol&PCl3&
d) 0.00355&mol&of&Na2HPO4&
e) 0.0125&mol&of&XeF4&
f) 2.60&mol&of&CH3CH3&
g) 3.25&x&102&mol&of&NH3&
h) 7.90&x&10[4&mol&H2SO3&
i) 1.00&x&10[3&mol&of&NaOH&
j) 1.75&x&10[4&mol&of&Fe&
&
&
pf2

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Download Molar Conversions: Atoms, Moles, Mass, and Volume and more Schemes and Mind Maps Chemistry in PDF only on Docsity!

Simple Molar Conversions

Name: __________________________

Date: _________________

Conversions Conversion Factor

Moles ßà # of particles 6.02 x 10 23 particles or 1 mol 1 mol 6.02 x 10 23 particles Moles ßà Mass (molar mass) g or 1 mol 1 mol (molar mass) g Moles ßà Volume (gas @ STP)

22.4 L

or 1 mol 1 mol 22.4 L g ß à mg 1 g 1000 mg 1000 mg 1g L ß à mL 1 L 1000 mL 1000 mL 1L

  1. How many atoms are contained in each of the following? a) CH 3 CO 2 H b) NH 4 Cl c) (CH 3 ) 2 CO d) (NH 4 ) 2 SO 4 e) C 15 H 22 O 6 N 2 S f) Ni(H 2 O) 4 (NH 3 ) 2 Cl 2
  2. What is the molar mass of each of the following? a) NO b) H 2 O c) NH 3 d) CO 2 e) FeCl 3 f) SnC 2 O 4 g) Sn(C 2 O 4 ) 2 h) (NH 4 ) 3 PO 4 i) CH 3 COOH j) CH 3 CH 2 CH 2 CH 3 k) Ni(H 2 O) 2 (NH 3 ) 4 Cl 2 l) Al 2 (SO 4 ) 3
  3. How many moles are in each of the following? a) 5.00 g C 10 H 8 b) 525 mg of K 3 PO 4 c) 6.00 L NO 3 F at STP d) 1.00 mL of O 3 at STP e) 4.55 x 10^12 atoms of Pt f) 6.02 x 10^16 molecules of PCl 5
  4. Calculate the mass of the following: a) 1.00 mol NH 4 Cl b) 4.50 mol of NH 4 Cl c) 3.25 mol PCl 3 d) 0.00355 mol of Na 2 HPO 4 e) 0.0125 mol of XeF 4 f) 2.60 mol of CH 3 CH 3 g) 3.25 x 10^2 mol of NH 3 h) 7.90 x 10-­‐^4 mol H 2 SO 3 i) 1.00 x 10-­‐^3 mol of NaOH j) 1.75 x 10-­‐^4 mol of Fe
  1. Calculate the volume of the following gases at STP: a) 0.235 mol of B 2 H 6 b) 9.36 mol of SiH 4 c) 2.55 x 10^3 mol of C 2 H 6
  2. Calculate the mass of each of the following: a) 0.125 mol of CO 2 at STP b) 5.48 mol of solid FeCl 3 c) 6.54 x 10-­‐^4 mol of HCN at STP d) 15.4 mol of solid Ni(OH) 2
  3. (a) How many atoms are in 2 molecules of Hg(IO3)2? (b) What volume at STP is occupied by 1.45 x 10^30 molecules of COF 2 gas? (c) How many molecules are there in 64.0 g of FeS? (d) How many moles are in 25.0 mL of HCN at STP? (e) What volume at STP is occupied by 43.5 g of ClF 3? (f) How many moles are in 2.75 x 10 23 atoms of Fe? (g) How many molecules are there in 125 mL of NOCl at STP? (h) What is the mass of 3.01 x 10^22 atoms of Pt? (i) What is the mass of 25.0 mL of Kr at STP? (j)What is the molar mass of 00139 mol of a substance having a mass of 0.888 g? (k) What is the density of acetic acid, CH 3 COOH, if 0.250 mol of CH 3 COOH has a volume of 14.3 mL? (l) How many moles are in 85.0 mg of CuSCN? (m) If 135 L of cyanogen gas has a mass of 313 g at STP, what is the molar mass of cyanogen? ANSWERS:
  4. a) 8 b) 6 c) 10 d) 15 e) 46 f) 23
  5. a) 30.0 g/mol b) 18.0 g/mol c) 17.0 g/mol d) 44.0 g/mol e) 162.3 g/mol f) 206.7 g/mol g) 294.7 g/mol h) 149.0 g/mol i) 60.0 g/mol j) 58.0 g/mol k) 233.7 g/mol l) 3 42.3 g/mol
  6. a) 0.0391 mol b) 0.00247 mol c) 0.268 mol d) 4.46 x 10-­‐^5 mol e) 7.56 x 10-­‐^12 mol f) 1.00 x 10-­‐^7 mol
  7. a) 53.5g b) 241g c) 447g d) 0.504g e) 2.59g f) 78.0g g) 5.53 x 10^3 g h) 0.0649g i) 0.0400g j) 9.77 x 10-­‐^3 g
  8. a) 5.26 L b) 2.10 x 10^2 L c) 5.71 x 10^4 L
  9. a) 5.50g b) 889 g c) 0.0177 g d) 1.43 x 10^3 g
  10. a) 18 atoms b) 5.40 x 10 7 L c) 4.38 x 10 23 molecules d) 1.12 x 10-­‐^3 mol e) 10.5 L f) 0.457 mol g) 3.36 x 1021 molecules h) 9.76 g i) 0.0935 g j) 63.9 g/mol k) 1.05 g/mL l) 6.99 x 10 -­‐4 mol m) 51.9 g/mol