Gas Laws 1. Know the equations for all of the gas laws and be able to calculate for the missing part.
a. Boyle
b. Charles
c. Gay-Lussac
d. Combined
e. Ideal Gas
2. Know what Standard Temperature and Pressure is
3. Know Avogadro's Principle

the answer is a and have a great day

i think that the answer is c

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

може ли да зареждате повече информация, моля