3 years ago

Write functions of the following parts of the digestive system.

Chemistry

1 answer:

Lapatulllka [165]3 years ago

3 0

Answer:

1. absorb water,get rid of of waste products

2.chewing

3. absorbing nutrients

4. holding the food, breakdown of food

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IrinaVladis [17]

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3) A saturated solution of PbCl2 in water was prepared and filtered. From the filtrate (solution collected after filtration), 50

qaws [65]

Answer: a) 0.0144mol/L

b) $1.19\times 10^{-5}$

Explanation:

Solubility product is defined as the equilibrium constant in which a solid ionic compound is dissolved to produce its ions in solution. It is represented as $K_{sp}$

The equation for the ionization of the $PbCl_2$ is given as:

We are given:

Solubility of $PbCl_2$ = $\frac{2.0g}{0.5L}=4g/L$

Molar Solubility of $PbCl_2$ = $\frac{4g/L}{278.1g/mol}=0.0144mol/L$

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Solubility product of $PbCl_2$ = $[Pb^{2+}][Cl^-]^2$

$K_{sp}=[0.0144][2\times 0.0144]^2$

$K_{sp}=1.19\times 10^{-5}$

Thus the solubility product constant is $1.19\times 10^{-5}$

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3 years ago

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4 years ago

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grin007 [14]

Answer:

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Explanation:

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