Question

Can anyone help me with this?

Answer 1

(a)

`v = 10.1mL` --- Silicon

`v = 9.0mL` --- Tin

`v = 7.5mL` -- Lead

(b)

`d = 1.55g/mL` --- Silicon

`d = 5.56g/mL` --- Tin

`d = 9.53g/mL` --- Lead

Step-by-step explanation:

Given

The attached table

Solving (a): The volume of each sample

For each element, the volume (v) is calculated as:

`v = v_f - v_i`

Where:

`v_f = Final\ Volume`

`v_i = Initial\ Volume`

So, we have:

Silicon:

`v_f = 40.1mL;\ \ \ v_i = 30.0mL`

So, we have:

`v = 40.1mL - 30.0mL`

`v = 10.1mL`

Tin:

`v_f = 29.0mL;\ \ \ v_i = 20.0mL`

So, we have:

`v = 29.0mL - 20.0mL`

`v = 9.0mL`

Lead:

`v_f = 33.5mL;\ \ \ v_i = 26.0mL`

So, we have:

`v = 33.5mL - 26.0mL`

`v = 7.5mL`

Solving (b): The density of each sample

For each element, the density (d) is calculated as:

`d = (m)/(v)`

Where

`m = mass`

`v = volume`

So, we have:

Silicon:

`m = 15.70g`

`v = 10.1mL` --- calculated in (a)

Density (d):

`d = (15.70g)/(10.1mL)`

`d = 1.55g/mL`

Tin:

`m = 50.07g`

`v = 9.0mL` --- calculated in (a)

Density (d):

`d = (50.07g)/(9.0mL)`

`d = 5.56g/mL`

Lead:

`m = 71.47g`

`v = 7.5mL` --- calculated in (a)

Density (d):

`d = (71.47g)/(7.5mL)`

`d = 9.53g/mL`