Question

calculate the number of cu atoms in 0.3175g of cu​

Answer 1

Answer:

3.035 × 10²¹ Cu atoms are present in 0.3175 gm of Cu.

Explanation:

Avogadro's law:

According to this law, At STP, equal volumes (for fluids)/moles of all matter contain the same number of molecules/atoms ($N_{A}$).
where $N_{A}$ = Avogadro's number

Calculation:

According to Avogadro's concept,

1 mole or 63 gm of Cu contains 6.023 × 10²³ Cu atoms.

∴ 1 gm of Cu contains $\frac{6.023 \times 10^{23} }{63}$ atoms.

∴ 0.3175 gm of Cu contains $(\frac{6.023 \times 10^{23} }{63} \times 0.3175)$ Cu atoms = 3.035 × 10²¹ Cu atoms.

You can learn more about Avogadro's concept by referring to the following links:

Define Avogadro's constant. How is it related to mole?​https://brainly.in/question/15125112

The Chemistry Concept-Avogadro
What is Avogadro's number?
https://brainly.in/question/638759

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