Part C Here are six unknown elements and some of their properties. Study the properties, and then answer the question that follows.

Element 1
State of matter: gas
Conductivity: very poor
Solubility (H2O): none
Melting point: -157°C Element 2
State of matter: solid
Conductivity: good
Solubility (H2O): reacts rapidly
Melting point: 777°C Element 3
State of matter: solid
Conductivity: poor
Solubility (H2O): none
Melting point: 327°C
Element 4
State of matter: liquid
Conductivity: very poor
Solubility (H2O): negligible
Melting point: -7°C Element 5
State of matter: solid
Conductivity: excellent
Solubility (H2O): none
Melting point: 1085°C Element 6
State of matter: solid
Conductivity: good
Solubility (H2O): reacts violently
Melting point: 29°C
Question
Look back at parts A and B to compare the properties of the unknown elements with the properties of the known elements. Based on these properties, match each unknown element to its group in the periodic table.

Drag each tile to the correct box.

Tiles
element 1
element 2
element 3
element 4
element 5
element 6
Pairs
group 1
arrowBoth
group 2
arrowBoth
group 11
arrowBoth
group 14
arrowBoth
group 17
arrowBoth
group 18
arrowBoth

as given the equation is

2al + 6 hcl > 2 alcl3 + 3 h2(g)

as per equation two moles of aluminum reacts with six moles of hcl to give two moles of alcl3 and three moles of hydrogen gas

given: three moles of al are present and 7 moles of hcl

for three moles of aluminum nine moles of hcl will be required

however as 7 moles of hcl are present so the limiting reagent is hcl

hcl is going to decide the number of moles of product formed

when six moles of hcl are present = 3 moles of h2 are formed

when one mole of hcl is present == 3/6 mole sof h2 will be formed

when 7 moles of hcl are present = 3 x 7/ 6 moles of h2 will be formed = 3.5 moles of h2

explanation:

two years ago, when picking flowers in the mountains back of yosemite valley, i found a book. it was blotted and storm-beaten; all of its outer pages were mealy and crumbly. the paper seemed to dissolve like the snow beneath which it had been buried, however; many of the inner pages were well preserved. and although all were more or less stained and torn, whole chapters were easily readable. this is the condition of the great open book of yosemite glaciers today; its granite pages have been torn and blurred by the same storms that wasted the castaway book.

two years ago, when picking flowers in the mountains back of yosemite valley; i found a book. it was blotted and storm-beaten, all of its outer pages were mealy and crumbly. the paper seemed to dissolve like the snow beneath which it had been buried, however, many of the inner pages were well preserved. and although all were more or less stained and torn; whole chapters were easily readable. this is the condition of the great open book of yosemite glaciers today, its granite pages have been torn and blurred by the same storms that wasted the castaway book.