Answer:
1) Oil is less dense than water so when oil spills, it spreads across the entire water surface.
2) The oil spreads very quickly with lighter oils such as gasoline.
3) Wind, Currents, and Warm Temperatures will cause Oil to spread quicker.
 
        
             
        
        
        
Answer:
3.5
Explanation:
500*0.175= 8.75 *40/1000=3500/1000=3.5
 
        
             
        
        
        
Mass i think hope and this helps u
        
                    
             
        
        
        
Answer:
223.5 g
Explanation:
The formula between the number of moles, mass and Mr can be used to convert moles to grams.
<em>Number of moles = mass ÷ Mr</em>
So, mass = number of moles × Mr
   Mr of Li₂O = (6.9 × 2) + 16 = 29.8
∴ Mass = 7.5 × 29.8 = <u>223.5 g</u>
 
        
             
        
        
        
To determine how stable the beads are as well ensue the securing of maximum enzymes as well as the retention of their activity.
<h3>What is concentration?</h3>
The concentration of a substance simply means the amount of the substance in solution. Thus we are looking at the amounts of sodium alginate and CaCl2 in the system.
The concentrations of the sodium alginate and CaCl2 is varied in order to determine how stable the beads are as well ensue the securing of maximum enzymes as well as the retention of their activity.
Learn more about enzymes:brainly.com/question/14953274
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