Calculate the number of joules of heat that is required to completely boil 500 mL of water at 100 C. The specific heat capacity of water is 4.184 J/gC, the heat of fusion for water is 333 J/g, and the heat of vaporization for water is 2260 J/g.

oxygen, selenium, tellurium, and polonium.

they're all from the same group as sulfur (group 16).

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