Answer:
15.0 µm
Step-by-step explanation:
Density = mass/volume
         D = m/V     Multiply each side by V
       DV = m        Divide each side by D
         V = m/D
Data:
m = 1.091 g
D = 7.28 g/cm³
  l = 10.0 cm
w = 10.0 cm
Calculation:
<em>(a) Volume of foil
</em>
V = 1.091 g  × (1 cm³/7.28 g)
   = 0.1499 cm³
(b) <em>Thickness of foil
</em>
The foil is a rectangular solid.
V  = lwh                            Divide each side by lw
 h = V/(lw)
    = 0.1499/(10 × 10)
    = 1.50 × 10⁻³ cm           Convert to millimetres
    = 0.015 mm                  Convert to micrometres
    = 15.0 µm
The foil is 15.0 µm thick.
 
        
             
        
        
        
1. “what forms of energy conversions occur during the process of photosynthesis? (How does energy transform?) 
2. What is missing from the food web but is essential to maintain equilibrium? 
A. Soil 
B.water 
C. Decomposers 
D. Oxygen
        
             
        
        
        
<h3><em><u>ᎪꪀsωꫀᏒ</u></em></h3>
even no = 3/6 = 1/2 
no. less than 5 = 4/6 = 2/3