Adopting the number of avogrado 6.02 * 10²³ / mol 
<span>Sodium chloride (table salt)</span> Molar Mass = 58.44 g / mol 
We will first have to find the number of moles in 35 grams of the element, like this:  
1 mol ----------------- 58.44 g 
X ---------------------- 35 g  
58.44 * x = 35 * 1 
58.44x = 35 

X = 0.598904...
X ≈ 0.60<span> mol </span> 
Now we will find how many atoms there are in 0.60 mol of this element, like this:  
1 mol -------------------- 6.02 * 10²³ atoms 
0.60 mol ----------------- X  
X = 0.60 * 6.02 * 10²³ 
 
        
             
        
        
        
Answer: 97
Explanation:
The element Ru is <u>Ruthenium</u> which has <u>44 protons</u>.
In this case, our atom is an isotope with <u>53 neutrons</u>.
With this information, we can use the mass number formula to find this atom's mass number.
mass number = protons + neutrons
mass number = <u>44 protons</u> + <u>53 neutrons</u>
mass number = <u>97</u>
 
        
             
        
        
        
Answer:
B. They will conserve energy during reproduction
Explanation:
 
        
                    
             
        
        
        
Blue usually means sadness, yellow is happiness, purple is calm, green is jealousy 
 
        
             
        
        
        
Answer :
The number of bonding pairs of electrons around the hydrogen atom = 2
The number of lone pairs of electrons around the hydrogen atom = 0
Explanation :
Lewis-dot structure : It shows the bonding between the atoms of a molecule and it also shows the unpaired electrons present in the molecule.
In the Lewis-dot structure the valance electrons are shown by 'dot'.
The given molecule is, 
As we know that carbon has '4' valence electrons, hydrogen has '1' valence electrons and nitrogen has '5' valence electrons.
Therefore, the total number of valence electrons in 
 = 1 + 4 + 5 = 10
According to Lewis-dot structure we conclude that, there are 8 number of bonding electrons and 2 number of non-bonding electrons.
The number of bonding pairs of electrons around the hydrogen atom = 2
The number of lone pairs of electrons around the hydrogen atom = 0