Stoichiometry - Test 1

First, we read the problem. Then we find the GIVEN, which includes ____ pieces of information that go in the the _______ box of the railroad.

• Two, top left

• Three, top left

• Two, top right

• Three, top right

The GOAL, or unknown, includes _____ pieces of information and goes in the ______ box of the railroad.

• Two, top left

• Three, top left

• Two, top right

• Three, top right

What is used to convert between grams and moles?

• Avogadro’s number

• Molar mass

• 6.022 x 10^23

• Mole ratio

What is used to convert between atoms and moles?

• Molar mass

• Mole ratio

• Periodic table

• Avogadro’s number

What is used to convert between moles of two different molecules?

• Molar mass

• Avogadro’s number

• Periodic table

• Mole ratio

Converting from grams of one molecule to moles of a different molecule is a _____ step problem and the railroad will have _____ boxes.

• Two, six

• Three, six

• One, four

• Two, eight

Converting a molecule from atoms to moles is a _____ step problem and the railroad will have _____ boxes.

• Two, six

• Two, eight

• One, six

• One, four

The Mole Ratio comes from _______ and is used to convert between ________.

• Periodic table, grams to moles

• Balanced chemical equation, moles of two different molecules

• Avogadro’s number, ions to moles

• Balanced chemical equation, moles to grams

What's the "goal unit" in the following problem? How many particles are in 0.250 grams of potassium permanganate (KMnO₄)?

• 0.250 grams KMnO₄

• particles

• KMnO₄

• 0.250

Tags

NGSS.HS-PS1-7

The molar mass of a compound is found by:

• adding the atomic numbers

• multiplying by 6.02 X 10²³

• adding up the masses of all the atoms

• multiplying the atomic mass by Avogadro’s number