A sample of 5 g of chemical A is combined in a chemical reaction with 12 g of chemical B. The mass of their products is 17 g. Which law of nature best supports this statement? law of conservation of energy

law of conservation of energy

law of conservation of mass

law of conservation of mass

law of averages

law of averages

law of regularity

law of regularity

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

colorless gas, exhibiting a blue glow when placed in an electric field

b) solid

its a type of rock