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Tenth Grade (Grade 10) Stoichiometry Questions

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Grade 10 Stoichiometry
How many atoms are in 3 moles of [math]H_2O[/math]?
  1. 18 atoms
  2. [math]6.02 xx 10^23[/math] atoms
  3. [math]1.8 xx 10^24[/math] atoms
  4. 1800 atoms
Grade 10 Stoichiometry
How many moles are in 75.0 grams of nitrogen gas, [math]N_2[/math]?
  1. 3.00 moles
  2. 0.333 moles
  3. 2.68 moles
  4. 4.52 moles
Grade 10 Stoichiometry
Grade 10 Stoichiometry
In the reaction [math]A + B rarr C + D[/math], if element B is in excess, then
  1. element A is the limited reactant
  2. element B is the limited reactant
  3. element C is the limited reactant
  4. element D is the limited reactant
Grade 10 Stoichiometry
Grade 10 Stoichiometry
Grade 10 Stoichiometry
The compound formula for dinitrogen trisulfide is which of the following choices?
  1. [math]N_2S_3 [/math]
  2. [math]N_2H_4 [/math]
  3. [math]N_2O_3 [/math]
  4. [math]N_2O_5 [/math]
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