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Kitty [74]
3 years ago
5

How many water molecules are in a block of ice containing 1.75 mol of water (H2O)?

Chemistry
2 answers:
forsale [732]3 years ago
6 0
<span>1.75 mol H2O x (6.022x10^23 molecules H2O / 1 mol H2O) = 1.05x10^24 molecules H2O if you need a further example let me know </span>
Nostrana [21]3 years ago
3 0

<u>Answer:</u> The number of molecules present in the given moles of water are 1.054\times 10^{24}

<u>Explanation:</u>

We are given:

Moles of water = 1.75 moles

According to mole concept:

1 mole of a compound contains 6.022\times 10^{23} number of molecules.

So, 1.75 moles of water will contain = 1.75\times 6.022\times 10^{23}=1.054\times 10^{24} number of molecules.

Hence, the number of molecules present in the given moles of water are 1.054\times 10^{24}

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Which element decreases its oxidation number in this reaction? bicl2 + na2so4 → 2nacl + biso4?
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c(Pb(NO₃)₂) = 0.1 mol/L; concentration of solution.

n(Pb(NO₃)₂) = c(Pb(NO₃)₂) · V(Pb(NO₃)₂).

n(Pb(NO₃)₂) = 0.1 mol/L · 0.05 L.

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From chemical reaction: n(Pb(NO₃)₂) : n(NaI) = 1 : 2.

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m(PbI₂) = 0.005 mol · 461 g/mol.

m(PbI₂) = 2.305 g; the theoretical yield of PbI₂.

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