Mixed Stoichiometry I (CHEM 1405)

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Mg      +      2HCl      Arrow.png      MgCl2      +      H2

Provide the mole ratio for each of the following mole conversions:

  1. Mg to H2

  2. HCl to H2

  3. Mg to HCl

  4. MgCl2 to HCl

 

 

Ca3P2(s) + 6H2O(l) Arrow.png 3Ca(OH)2(s) + 2PH3(g)

  1. How many moles of phosphine (PH3) are prepared from 5.00 moles of Ca3P2 ?

 

 

  1. How many moles of phosphine (PH­3) are prepared from 5.00 moles of H2O?

 

 

 

C3H8      +      5O2      Arrow.png      3CO2      +      4H2O

  1. How many moles of CO2 are produced from the combustion of 45 g of C3H8?

 

 

  1. What mass of H2O is produced if 0.200 mole of CO2 is also produced?

 

 

  1. What mass of C3H8 is required to produce 1.80 g of H2O?

 

 

  1. What mass of C3H8 is required to react with 160 g of O2?