Answer:
The electron configuration for this atom is Calcium, which has 2 valence electrons. 
Explanation:
Following the periodic table and with the electron configuration, you will end up with calcium, which has 2 valence electrons. (Always follow the electron configuration from left to right! It begins at hydrogen, then to helium... and so on.)
1s2 -> He....
2s2 -> Be....
2p6 -> Ne...
3s2 -> Mg...
3p6 -> Ar...
4s2 -> Ca.
 
        
             
        
        
        
Bronchodilators <span>are prophylactic agents used to treat bronchoconstriction.</span>
        
             
        
        
        
Hi there! Let's solve this problem shall we! 
⠀Volume = 10g
       Mass = 2 mL 
In this specific problem, they are asking us to find the <u><em>density </em></u>of the object. So,<u><em> using the information given to us</em></u> (volume and mass), let's solve the problem! 
Now, if you remember, D = M ÷ V
So, let's fill in the blanks! 
D = Our unknown value 
M = 2mL 
V = 10g 
Here is the filled out formula: 
D = M ÷ V
D = 2mL ÷ 10g
D = 5 g/mL 
*Make sure you put the units for your final solution!*
 
        
             
        
        
        
Depending in the category of the Hurricane, you make experience different levels of wind power and destruction. Hurricanes only have 5 categories ranking from Category 1 to Category 5. The smallest category is category 1 making category 5 the largest. The bigger the category, the more wind or destruction you'll experience.
        
                    
             
        
        
        
Answer:
A tritium is produced. 
Explanation:
Combining two additional neutrons to the nucleus of the hydrogen atom makes it a tritium, Hydrogen-3. 
    neutron is designated  ¹₀n; this shows a mass number of 1 and no atomic number
   Hydrogen-1 is designated as ₁¹H; a mass number of 1 and atomic number of 1. This particle is actually more like a proton. 
         Combining both: 
                   ₁¹H + 2¹₀n → ³₁H
This is a nuclear reaction and in balancing such reaction equation, mass numbers and atomic numbers must be conserved.