<span>The correct answer would be the second option. It is the reaction Sr + O2 = 2SrO that is not balanced correctly. To be able to say that an equation is balanced, it should be that the number of each atom in the reactant and the product side is equal. As we can see, at the reactant side there is only one Sr while in the product there are 2 Sr atoms.
</span>
It looks like it is going by 25's so I would say 22.75 mL
Answer: True no need for an explanation..
B. Density
Density = mass/volume because it’s basically the concentration of mass. How much matter takes up the space. If you pack more matter into less space, it is more dense.
Answer:
Group 1A
Explanation:
The Alkali metals all end is S1. What period the element is in determines the 1st number. Example: : H ends 1s1