Question

How many atoms are in 0.23 moles of calcium?

Answer 1

There are approximately 1.384 x 10^23 atoms in 0.23 moles of calcium.

Step-by-step explanation:

To calculate the number of atoms in 0.23 moles of calcium, you can use Avogadro's number, which is 6.022 x 10^23 atoms/mol. First, determine the molar mass of calcium using the periodic table, which is 40.08 g/mol. Granola bars and trail mix are also commonly marketed as healthy snacks. However, they can be high in added sugars, unhealthy fats, and artificial ingredients. Raw almonds, on the other hand, are a healthier option as they are a good source of healthy fats, protein, and fiber.

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Real-fruit gummies may seem like a better choice than regular gummy candies, but they often contain added sugars and artificial ingredients. Similarly, 100 percent fruit juice may seem like a healthy choice, but it is high in sugar and lacks the fiber found in whole fruits.

Then, multiply the molar mass by the number of moles:

0.23 moles x 6.022 x 10^23 atoms/mol = 1.384 x 10^23 atoms

Therefore, there are approximately 1.384 x 10^23 atoms in 0.23 moles of calcium.

Answer 2

1.385 × 10²³ atoms of calcium

Step-by-step explanation:

Given data:

Number of moles of calcium = 0.23 mol

Number of atoms = ?

Solution:

The given problem will solve by using Avogadro number.

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.

The number 6.022 × 10²³ is called Avogadro number.

For example,

18 g of water = 1 mole = 6.022 × 10²³ molecules of water

1.008 g of hydrogen = 1 mole = 6.022 × 10²³ atoms of hydrogen

For 0.23 mole of calcium:

one mole = 6.022 × 10²³ atoms of calcium

0.23 × 6.022 × 10²³ atoms of calcium

1.385 × 10²³ atoms of calcium