Question The melting point of paradichlorobenzene is 53.0°C. In a laboratory activity, two students try to verify this value. The first student records 51.5°C, 53.5°C, 55.0°C, 52.3°C, and 54.2°C. The second student records 52.3°C, 53.2°C, 54.0°C, 52.5°C, and 53.5°C. a. Calculate the average value for the two students.

b. Calculate the percent error for each student.

c. Which student is most precise? Most accurate? Explain.

la respuesta es si te gusta hacer lo que siempre haces cuando nunca ves a alguien en el espejo porque sabes que no siempre están ahí.

if you mean hydrogen and oxygen then water is the product

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