The answer is D, because "Animals without a backbone are invertebrates."
 
        
             
        
        
        
Answer: D
Explanation:
I assume you meant  .
.
- The atomic mass of potassium is 39.0983 g/mol.
- The atomic mass of sulfur is 32.065 g/mol.
- The atomic mass of oxygen is 15.9994 g/mol.
So, the formula mass of potassium sulfate is 2(39.0983)+32.065+4(15.9994)=174.2592 g/mol.
So, 5.00 moles have a mass of (5.00)(174.2592), which is about <u>870 g</u>
 
        
             
        
        
        
It's useful because it highlights structures in biological tissue.
        
             
        
        
        
A. 1
B. 4
C. 5
D. 3
E. 2
The correct answer is E. 2
        
             
        
        
        
A. Protons, neutrons, and electrons