Stoic Test

Put the correct labels in the correct spots.

c

d

b

a

molar mass of sodium

mole ratio

molar mass of Al(OH)3

given of Al(OH)3

Tags

NGSS.HS-PS1-7

Match the following conversions to where you get them.

• big numbers from the reaction

• molar mass

• MEMORIZED

  22.4 L = 1 Mole

• Liters to mole

• MEMORIZED

  6.022 x 10²³ particles = 1 mole

• mole ratio

• periodic table

• particles to moles

Tags

NGSS.HS-PS1-7

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

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

Tags

NGSS.HS-PS1-1

The ______________ yield is the maximum amount of product possible in a reaction. This determines the amount of product that should be produced in a perfect setting

• Percent
• actual
• stoichiometry
• theoretical

Theoretical yield = 84g while the Actual yield = 60g

Calculate the percent yield.

• 71.4%

• 140%

• 5040%

• 80%

Tags

NGSS.HS-PS1-7

Order the following conversion factors if you are going from grams of X to grams of Y.

• molar mass of Y

• mole ration X & Y

• molar mass of X

• given of X

The limiting reactant

• slows the reaction down
• is used up first
• is the reactant that is left over
• controls the speed of the reaction

% Yield = ​ (a)   ​ (b)   ​ (c)   x 100%

• actual
• /
• theoretical
• x
• limiting reactant
• excess reactant

Tags

NGSS.HS-PS1-7

2NaCl + Ca → CaCl₂ + 2Na

What is the limiting reactant if 4 moles of NaCl react with 120 grams of Ca?

(Molar mass of NaCl = 58 g/mol;

Molar Mass of Ca = 40 g/mol;

Molar Mass of Na = 23 g/mol;

Molar Mass of CaCl₂ = 110 g/mol)

• NaCl

• Ca

• CaCl₂

• Na

Tags

NGSS.HS-PS1-7