How many molecules are there in 0.00250 mole of acetic acid? Express your answer in scientific notation using E to represent scientific notation.
For example, 6.022x10^23 would be represented as 6.022E23.
Round your answers to the proper number of significant figures and do not include
units with you answer.

the formula would be mgso4

mgso[subscript]4

because of all the things that happen around the us, many people get into arguments which sadly could get physical, but we should actually make a change for that.

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