Please help me ASAP!Please this is due soon and i don't have all day.

Can someone please help me find the percentage change in mass of each section, using the formula

% change in mass = change in mass/starting mass × 100%

Round to the nearest hundredth!

Before-

1. 7.83 g

2. 7.4 g

3. 7.3 g

4. 7.49 g

5. 7.4 g

6. 7.89 g

After

1. 8.268 g

2. 7.24 g

3. 6.51 g

4. 7.0 g

5. 7.24 g

6. 8.51 g

Question

contestada

Respuesta :

Louli Louli · Answer 1 · 2019-09-15T12:35:08+02:00

Answer:

Section 1: 5.59%

Section 2: -2.16%

Section 3: -10.82%

Section 4: -6.54%

Section 5: -2.16%

Section 6: 7.86%

Explanation:

The formula to calculate the percent change in mass is given as:

[tex]PercentChange = \frac{ChangeInMass}{StartingMass}*100=\frac{NewMass - OldMass}{OldMass}*100[/tex]

1- Section 1:

Old mass = 7.83 g and New mass = 8.268 g

[tex]PercentChange = \frac{8.268-7.83}{7.83}*100 =[/tex]5.59%

2- Section 2:

Old mass = 7.4 g and New mass = 7.24 g

[tex]PercentChange = \frac{7.24-7.4}{7.4}*100 =[/tex]-2.16%

3- Section 3:

Old mass = 7.3 g and New mass = 6.51 g

[tex]PercentChange = \frac{6.51-7.3}{7.3}*100 =[/tex]-10.82%

4- Section 4:

Old mass = 7.49 g and New mass = 7.0 g

[tex]PercentChange = \frac{7.0-7.49}{7.49}*100 =[/tex]-6.54%

5- Section 5:

Old mass = 7.4 g and New mass = 7.24 g

[tex]PercentChange = \frac{7.24-7.4}{7.7.4}*100 =[/tex]-2.16%

6- Section 6:

Old mass = 7.89 g and New mass = 8.51 g

[tex]PercentChange = \frac{8.51-7.89}{7.89}*100 =[/tex]7.86%

Hope this helps :)