Stoichiometry Particles to Particles

The calculation of the relationships between different molecules in a reaction is the definition of __________________.

• physics

• algebra

• stoichiometry

• language arts

Tags

NGSS.HS-PS1-7

In the reaction: P₄ + 6Cl₂ ---> 4PCl₃, how many molecules of Phosphorous Chloride are there in the product?

• 1

• 2

• 4

• 12

Tags

NGSS.HS-PS1-7

A mole of any substance is how many particles?

• 6.02 x 10²³

• 6.02 x 10^-23

• 602 million

• 602

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 chemical equation below, Na is the symbol for sodium

• 2

• How many hydrogen atoms are on the left side?

• 2

• How many hydrogen atoms are on the right side?

• 4

• How many sodium atoms are on the left side

• 4

• How many sodium atoms are on the left side?

Tags

NGSS.HS-PS1-7

H₂O
This number tells how many molecules are in a chemical equation.

• coefficient

• subscript

• compound

• element

The blue numbers in the image below represent ________

• I don't know, and don't want to try

• coefficients

• subscripts

• none of the answers are correct

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

• 1

• 2

• 6

• 12

Tags

NGSS.MS-PS1-1

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

Tags

NGSS.HS-PS1-7

Before you begin any stoichiometry problem, you must always start with this.

• A periodic table.

• A calculator.

• A balanced chemical equation.

• All of the above are helpful.

Tags

NGSS.HS-PS1-1