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Otrada [13]
3 years ago
9

Explain why some objects float in water /oil/etc and others do not

Chemistry
2 answers:
Andru [333]3 years ago
8 0
Salutations!

Explain why some objects float in water /oil/etc and others do not.

Some objects tend to float in water because they have unalike densities. The objects that float have lesser densities, that is why the tend to float in water.If the density of the object is greater, the objects tend to sink. 

Hope I helped :D
seropon [69]3 years ago
5 0

Answer:

The reason why some objects float and some do not is for a simple reason. If the certain object has a higher density than water the object will NOT float. If the object is lighter than the density than water, It WILL float.

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5) Calculate the molality of 0.210 mol of KBr dissolved in 0.075kg pure<br> water?
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Answer:

\boxed {\boxed {\sf 2.8 \ m }}

Explanation:

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m=\frac{moles \ of \ solute}{kg \ of \ solvent}

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moles= 0.210 \ mol \\kilograms = 0.075 \ kg

Substitute the values into the formula.

m= \frac{ 0.210 \ mol }{0.075 \ kg}

Divide.

m= 2.8 \ mol/kg= 2.8 \ m

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