Answer:
The answer is mass
Explanation:
Because mass is an extensive property of matter
 
        
             
        
        
        
Color
Explanation:
Only color out of the listed observations is the qualitative observation. Qualitative observations are usually carried out using our senses. 
- Sense of touch makes us feel the texture of particular subject. 
- Sense of smell gives different types of scents and odors. 
- Sense of sight helps us to identify different colors and appearances in a study. 
- Sense of taste helps to know if something is bitter, sweet or sour. 
- Sense of hearing helps to know how audible something it. 
Qualitative observations does not involve the use of numbers. 
Learn more: 
observations brainly.com/question/5096428
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The answer is d, because the simplest form of C4H10 is C2H5 which is the empirical formula
        
             
        
        
        
Answer: Protons have a positive charge. Electrons have a negative charge. The charge on the proton and electron are exactly the same size but opposite. Neutrons have no charge.
Explanation:
 
        
             
        
        
        
Answer:
9.474 x 10^2
Explanation:
ok. first you have to get the value in the required unit so 9474mm/(10mm/cm) = 947.4 so scientific notation states that the number must be raised to any power of an integer and the value of the number being raised must be less than than 10 and more than or equal to 1
so it must have one digit in front so.. 947.4 becomes 9.474 and because you move 2 places to the left, ur power is positive 2
and proof 10^2 is 100 so multiply 9.474 by 100 and u will get 947.4 cm which is also 9474 mm