<span>Polar easterlies are wind belts that extend 60 degrees latitude. </span><span />
Answer:
See explanation
Explanation:
The elements in group form univalent positive ions and element in group 17 form univalent negative ions. Hence, when a group 1 element reacts with a group 17 element, a compound of the sort MX is formed. Hence, when a group 1 element reacts with bromine, a salt is formed with the general formula MBr.
Elements of group 1 are highly electro positive metals. They react with water to form the metal hydroxide and release hydrogen gas. Hence, when group 1 elements react with water, hydrogen gas is released.
A group 1 element forms a univalent positive ion while a group 16 element forms a divalent negative ion. Hence, when a groups 1 element reacts with oxygen, the compound formed must have the general formula M2O.
The reactivity of group 1 metal increases down the group hence Cs is the most reactive group 1 element.
Lithium displays a slightly different chemistry from other group 1 elements because of its small size.
Answer:
nitrogen
Explanation:
The stoichiometry of the reaction says that
and
react 3:1 to form 2 moles of
, so, if you have 3,5 moles of H, which is equal to 1,75 moles of
, and 5 moles of N, which are equal to 2,5 moles of
. only
=0.583 moles of
, will react, leaving <em>1.917 moles of </em>
<em>unreacted</em>, and forming 0.583*2=1.166 moles of 
Water solubility of oxygen at 25oC and pressure = 1 bar is at 40 mg/L water. In air with a normal composition the oxygen partial pressure is 0.2 atm. This results in dissolution of 40 . 0.2 = 8 mg O2/L in water that comes in contact with air.
1mol—44g/mol
0.10mol—x
x=0.10*44
x=4.4 g