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Answer:
"The elements are arranged in seven horizontal rows,called periods or series,and 18 vertical columns,called Groups."
Explanation:
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Answer:
Total pressure increased
Explanation:
When gas C is added in the vessel then number of mole increases and number of collision depends on the number of molecules present in the vessel and on adding gas C ,mole also increases hence number of collision increases therefore pressure also increases because number of collision increases.
Total pressure increases.
A fact can be disapproved with further evidence different details. So basically evidence can change a fact!! Hope this helps
Hydrogen + oxygen --> water
2,1g + 16,8g = x
x = 18,9g
