What is the purpose of using mole in chemistry?

• To accurately measure the amount of substance

• To balance chemical equations

• To measure temperature changes

• To determine the color of a substance

What role does mole play in chemical reactions and stoichiometric calculations?

• Determining the amount of substances involved

• Balancing chemical equations

• Converting between mass and moles

• Measuring the volume of gases

Mole is defined as a unit used in chemistry to represent the amount of substance, equivalent to Avogadro's number of ___

Why is the concept of mole important in chemistry?

What is the fundamental concept in chemistry that is essential for students to understand?

• Mole

• Atom

• Molecule

• Bond

2.0molのH2Oは何gか。（H=1、O=16、有効数字2桁で解答）

• 36g

• 28g

• 32g

• 24g

44gのCO2は何molか。（C=12、O=16、有効数字2桁で解答）

• 1.0mol

• 3.0mol

• 2.0mol

• 4.0mol

0.50molのアルゴンは標準状態で何Lか。（有効数字3桁で解答）

• 11.2L

• 10.0L

• 9.0L

• 8.0L

標準状態で2.24LのCO2は何molか。（有効数字2桁で解答）

• 0.10mol

• 0.20mol

• 0.40mol

• 0.30mol

1.2×1023個のO2は何molか。（有効数字2桁で解答）

• 0.40mol

• 0.50mol

• 0.30mol

• 0.20mol