Stoichiometry Regents Chemistry

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

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

• 1

• 2

• 6

• 12

Tags

NGSS.MS-PS1-1

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

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-PS1-7

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

• 1

• 2

• 4

• 12

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

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

The hardest part of chemistry this year was:

• States of matter

• Labs

• Balancing equations

• Atomic Theory

• Stoichiometry

Tags

NGSS.HS-PS1-5

NGSS.HS-PS1-7

In a balanced chemical equation, the number of atoms for each element is the same on both sides of the equation. What is this principle called?

• Law of Conservation of Mass

• Law of Definite Proportions

• Law of Multiple Proportions

• Avogadro's Law

Tags

NGSS.HS-PS1-7