How many carbon atoms are there in a diamond (pure carbon) with a mass of 52 mg?

검증된 단계별 안내

Step 1: Convert the mass of the diamond from milligrams to grams. This is because the molar mass of carbon is usually given in grams per mole (g/mol). To convert from milligrams to grams, divide the given mass by 1000.

Step 2: Use the molar mass of carbon to convert the mass of the diamond to moles. The molar mass of carbon is 12.01 g/mol. To do this, divide the mass of the diamond (in grams) by the molar mass of carbon.

Step 3: Use Avogadro's number to convert the number of moles to the number of atoms. Avogadro's number (6.022 x 10^23) is the number of atoms in one mole. To do this, multiply the number of moles by Avogadro's number.

Step 4: The result from step 3 is the number of carbon atoms in the diamond. Remember that this is a very large number because atoms are extremely small.

Step 5: Always remember to check your units at each step to ensure they cancel out appropriately, leaving you with the units you want for your final answer (in this case, atoms).

비슷한 문제에 대한 검증된 영상 답변:

이 영상 해법은 위 문제에 도움이 된다고 튜터들이 추천한 것입니다.

영상 길이:

주요 개념

질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.

Molar Mass of Carbon

The molar mass of carbon is approximately 12.01 g/mol. This value represents the mass of one mole of carbon atoms, which is essential for converting between mass and the number of atoms. In this case, knowing the molar mass allows us to calculate how many moles of carbon are present in the given mass of diamond.

Avogadro's Number

Avogadro's number, approximately 6.022 x 10²³, is the number of atoms or molecules in one mole of a substance. This constant is crucial for determining the number of individual carbon atoms in the diamond once the number of moles has been calculated from the mass. It provides a bridge between the macroscopic scale of grams and the microscopic scale of atoms.

Mass to Moles Conversion

To find the number of carbon atoms in the diamond, we first convert the mass of the diamond from milligrams to grams (52 mg = 0.052 g). Then, we use the molar mass of carbon to convert this mass into moles. Finally, multiplying the number of moles by Avogadro's number gives the total number of carbon atoms present in the diamond.