Answer:
Halogens (group 17) are very reactive because they need only one electron to fulfil their ... Which group in the periodic table contains metal, non-metal, and liquid as well as gas at room temperature? ... What are the oxides of non metals?
Explanation:
Answer:
Positively charged ion
Explanation:
Customary nomenclature rules
Answer:224
Explanation:
We should answer it with Stoichiometry
We say: 20 g H2× (1 mol/ 2g)× ( 22.4 lit/ 1 mol) = 224
Means: we have 20 grams and every 2g H2, equals to 1 mol of it and every 1 mol of H2, equals to 22.4 lit( because of STP)
hope you got this:)