Question

Calculate the number of moles,and molecular in:10 g water

Answer 1

Answer:

10^24 nymber of moles

Explanation:

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Answer 2

1) MOLAR MASS OF (H20) -

$\longrightarrow\sf{2 \times h + 1 \times o} \\ \\ \longrightarrow\sf{2 \times 1 + 1 \times 16} \\ \\ \longrightarrow\sf{2 + 16} \\ \\ \longrightarrow\sf{18g \: {mol}^{ - 1} }$

2) NO. OF MOLES = MASS OF H20 / MOLAR MASS OF H20 -

$\longrightarrow\sf{ \frac{10g}{18g \: {mol}^{ - 1} } } \\ \\ \longrightarrow\sf{0.55 \: moles}$

3) NO. OF MOLECULES = NO. OF MOLES × AVOGADROS NO -

$\longrightarrow\sf{0.55 \times 6.022 \times {10}^{23} } \\ \\ \longrightarrow\sf{3.345 \: molecules}$