Basic Stoichiometry

If I have 6.02 x 10²³ particles of O₂, how many moles do I have?

• 1

• 6.02 x 10²³

• None

• 16

In the reaction: P₄ + 6Cl₂ ---> 4PCl₃, how many atoms of Chlorine are in the reactant?

• 1

• 2

• 6

• 12

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NGSS.HS-PS1-7

If I were to put 6.02 x 10²³ particles of H₂O on a balance, what would the reading be?

• 2 g

• 4 g

• 18 g

• 6.02 g

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NGSS.HS-PS1-7

When calculating molar mass for an element, which number do you need to look at on the periodic table?

• Atomic number

• Atomic Mass

• Atomic particles

• Avogardo's Number

What conversion factor will you use next?

• molar mass of NaBr

• molar mass of HBr

• mole ratio of NaBr to HBr

• 22.4 L = 1 mole

What goes in the green spot?

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NGSS.HS-PS1-7

Where do you get the molar mass from?

• periodic table

• coefficients in the reaction

• you just have it memorized

• it is always one

• I don't know

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NGSS.HS-PS1-1

Where do you get the mole ratio from?

• periodic table

• coefficients in the reaction

• you just have it memorized

• it is always one

• I don't know

Match the following conversions to where you get them.

• big numbers from the reaction

• mole ratio

• MEMORIZED

  22.4 L = 1 Mole

• particles to moles

• MEMORIZED

  6.022 x 10²³ particles = 1 mole

• Liters to mole

• periodic table

• molar mass

Is there anything wrong with this set up of stoichiometry? If so, choose what is wrong. If not, choose the blank box.

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NGSS.HS-PS1-7