Answer:
There is 3 because K2 is its own atom and it has 2 K2 and Co3 is its own and there's one
Explanation:
This is what I was taught
 
        
             
        
        
        
Answer is B since it uses strains and differential transformation to see
        
             
        
        
        
Answer:
100g/500mL
Explanation:
1ml is .001 of 1 L
this means that per one ml, there is 200g*.001, or .2g/mL, or simply .2g.
now we multiply this by 500, for the 500ml we are calculating. 500*.2=100.
We can also skip these steps and take 200g*.5L, as 500mL is 1/2 liter. We get the same outcome, so the answer is 100g
 
        
             
        
        
        
1.b
2. a
3.c
4. d
5. e
6. j
7. h
8. i
9. f
10 g