It looks all correct to me, great job!
Answer: The metalloids are a group of elements in the periodic table. They are located to the right of the post-transition metals and to the left of the non-metals. Metalloids have some properties in common with metals and some in common with non-metals.
Explanation:
Hydrogen + oxygen --> water
2,1g + 16,8g = x
x = 18,9g
The answer its O-H.........
We shall consider V, the volume and T, the temperature.
According to Boyle's Laws:
In our case:
