Answer:
pH is a measure of how acidic/basic water is.
Explanation:
 
        
             
        
        
        
D Streak. The student is scratching it on white paper to test the streak.
        
                    
             
        
        
        
100 --- 55
1400 ---x
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x=1400 x 55/100 =14 x 55 = 770  
 The answer is 770 
Hope This Helps!
 
        
                    
             
        
        
        
Answer:
The carboxylic end of the detergent is polar.
Explanation:
The carboxylic end is hydrophilic that"s this end interact with water.
    Oil molecules are nonpolar because they contain straight chain of hydrocabon which is hydrophobic in nature.
      Due to hydrophobic in nature oil molecules are not soluble or insoluble in water.
 
        
             
        
        
        
Answer: I don't have the picture you're looking at, but I can try to give you some clues to help you out. 
Prophase is where the chromatids enter the cell and the chromosomes attach to the spindle fibers in the cell. 
<u>Met</u>aphase: all of the chromosomes line up in the center of the cell (I use this trick I made up to remember this one: The chromosome will have <u>Met </u> the teacher's expectations when they line up in the center of the cell.) 
Telophase: is where the sister chromatids go to opposite sides of the cell right before they split
Anaphase is when they finally split and are now classified as two different cells. One parent cell and one daughter cell. 
I hope this helps you to solve your problem!
- AnaMae10