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How many molecules are present in 1 kg m...

How many molecules are present in 1 kg mole of a substance?

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To find out how many molecules are present in 1 kg mole of a substance, we can follow these steps: ### Step 1: Understand the concept of a mole A mole is a unit in chemistry that represents a specific number of particles, which can be atoms, molecules, ions, etc. This number is known as Avogadro's number, which is approximately \(6.022 \times 10^{23}\). ### Step 2: Define 1 kg mole 1 kg mole refers to 1000 moles of a substance. This is because "kg" means kilogram, and 1 mole is defined as the amount of substance that contains \(6.022 \times 10^{23}\) entities. ...
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Knowledge Check

  • How many molecules are present in 3 moles of ethane?

    A
    `11xx6.022xx10^(23)`
    B
    3
    C
    `3xx6.022xx10^(23)`
    D
    `3xx8xxx6.022xx10^(23)`
  • How many molecules are present in 1g of hydrogen gas?

    A
    `5.301xx10^(23)`
    B
    `6.346xx10^(23)`
    C
    `4.346xx10^(22)`
    D
    `3.01xx10^(23)`
  • How many moles are present in 11.5 g of sodium?

    A
    `0.05` mole
    B
    `5.0` mole
    C
    1.5 mole
    D
    0.5 mole
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