The hydrogen bonds that form between water molecules account for some of the essential and unique properties of water. The attraction created by hydrogen bonds keepswater liquid over a wider range of temperature than is found for any other molecule its size.
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If the item or substance has changed into a state where you are able to change it back such as:
Water melting
Water freezing
Answer:
21.02moles of KBr
Explanation:
Parameters given:
Number of moles BaBr₂ = 10.51moles
Complete reaction equation:
BaBr₂ + K₂SO₄ → KBr + BaSO₄
Upon inspecting the given equation, we find out that the atoms are not balanced on both sides of the equation:
The balanced equation is:
BaBr₂ + K₂SO₄ → 2KBr + BaSO₄
From the equation:
1 mole of BaBr₂ produces 2 moles of KBr
∴ 10.51 moles of BaBr₂ will yield (2 x 10.51) moles = 21.02moles of KBr
Hello!
We use the amount in grams (mass ratio) based on the composition of the elements, see: (in 100 g solution)
C: 83.7% = 83,7 g
H: 16.3% = 16.3 g
Let us use the above mentioned data (in g) and values will be converted to amount of substance (number of moles) by dividing by molecular mass (g / mol) each of the values, lets see:
![C: \dfrac{83.7\:\diagup\!\!\!\!\!g}{12\:\diagup\!\!\!\!\!g/mol} \approx 6.975\:mol](https://tex.z-dn.net/?f=C%3A%20%20%5Cdfrac%7B83.7%5C%3A%5Cdiagup%5C%21%5C%21%5C%21%5C%21%5C%21g%7D%7B12%5C%3A%5Cdiagup%5C%21%5C%21%5C%21%5C%21%5C%21g%2Fmol%7D%20%5Capprox%206.975%5C%3Amol)
![H: \dfrac{16.3\:\diagup\!\!\!\!\!g}{1\:\diagup\!\!\!\!\!g/mol} = 16.3\:mol](https://tex.z-dn.net/?f=H%3A%20%5Cdfrac%7B16.3%5C%3A%5Cdiagup%5C%21%5C%21%5C%21%5C%21%5C%21g%7D%7B1%5C%3A%5Cdiagup%5C%21%5C%21%5C%21%5C%21%5C%21g%2Fmol%7D%20%3D%2016.3%5C%3Amol)
We note that the values found above are not integers, so let's divide these values by the smallest of them, so that the proportion is not changed, let's see:
![C: \dfrac{6.975}{6.975} = 1](https://tex.z-dn.net/?f=C%3A%20%20%5Cdfrac%7B6.975%7D%7B6.975%7D%20%3D%201)
![H: \dfrac{16.3}{6.975} \approx 2.3](https://tex.z-dn.net/?f=H%3A%20%20%5Cdfrac%7B16.3%7D%7B6.975%7D%20%5Capprox%202.3)
Note: So the ratio in the smallest whole numbers of carbon to hydrogen is 3:7, t<span>hus, the minimum or empirical formula found for the compound will be:
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I hope this helps. =)