Answer:
<h2>2.49 g/cm³</h2>
Explanation:
The density of a substance can be found by using the formula

From the question we have

We have the final answer as
<h3>2.49 g/cm³</h3>
Hope this helps you
 
        
             
        
        
        
Answer:
11.3 g
Explanation:
7.895 + 3.4 = 11.295
When rounded to correct number of significant figures --> 11.3 
There are 3 significant figures in 11.3
 
        
             
        
        
        
Protons, neutron, and elecrons
        
             
        
        
        
Answer:
Plants need energy from the sun, water from the soil, and carbon from the air to grow. Air is mostly made of nitrogen, oxygen, and carbon dioxide. So how do plants get the carbon they need to grow? They absorb carbon dioxide from the air.
please make most brainlyest
 
        
             
        
        
        
Answer:
All elements are neutral
Explanation:
The plum pudding model of the atom indicated that all elements are neutral. The model was proposed by J.J Thomson after he conducted his experiment on the gas discharge tube. 
From the experiment he discovered electrons which he called cathode rays. 
Therefore, he suggested the plum pudding model of the atom. 
The model describes negatively charge sphere surrounded by positive charges to balance them.