Question

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

Answer 1

Section 1: 5.59%

Section 2: -2.16%

Section 3: -10.82%

Section 4: -6.54%

Section 5: -2.16%

Section 6: 7.86%

Step-by-step explanation:

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

`PercentChange = (ChangeInMass)/(StartingMass)*100=(NewMass - OldMass)/(OldMass)*100`

1- Section 1:

Old mass = 7.83 g and New mass = 8.268 g

`PercentChange = (8.268-7.83)/(7.83)*100 =`5.59%

2- Section 2:

Old mass = 7.4 g and New mass = 7.24 g

`PercentChange = (7.24-7.4)/(7.4)*100 =`-2.16%

3- Section 3:

Old mass = 7.3 g and New mass = 6.51 g

`PercentChange = (6.51-7.3)/(7.3)*100 =`-10.82%

4- Section 4:

Old mass = 7.49 g and New mass = 7.0 g

`PercentChange = (7.0-7.49)/(7.49)*100 =`-6.54%

5- Section 5:

Old mass = 7.4 g and New mass = 7.24 g

`PercentChange = (7.24-7.4)/(7.7.4)*100 =`-2.16%

6- Section 6:

Old mass = 7.89 g and New mass = 8.51 g

`PercentChange = (8.51-7.89)/(7.89)*100 =`7.86%

Hope this helps :)