What is the arrow pointing to? A solution of different molecules. Some of them consist of two small atoms attached to a bigger one. Some are negatively charged, and consist of one big atom attached to a small one. There are also small positively charged atoms, which are pointed at by an arrow. What is the arrow pointing to? A solution of different molecules. Some of them consist of two small atoms attached to a bigger one. Some are negatively charged, and consist of one big atom attached to a small one. There are also small positively charged atoms, which are pointed at by an arrow. water molecule hydroxide ion electron hydronium ion hydrogen ion

a corroding iron, if that's one of your choices

може ли да зареждате повече информация, моля

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