Determine the ratio of amount naoh reaction per unit amount fecl3. enter an integer that represents x mol naoh/1 mol fecl3. 1.50 mol naoh 0.50 mol fecl3

Here we have to calculate the amount of sodium hydroxide (NaOH) will react with ferric chloride (FeCl₃)

Thus 1 mole of FeCl₃ will react with 3 moles of NaOH. The integer will be 3. 0.739 g of NaOH per unit amount of FeCl₃.

Thus, 3 mol of NaOH/ 1 mol of FeCl3. 1.50 mol of NaOH per 0.50 mol of FeCl3.

The reaction between NaOH and FeCl₃ produces sodium chloride (NaCl) and ferric hydroxide [Fe (OH)₃]. The reaction is –  

3NaOH + FeCl₃ = 3 NaCl + Fe(OH)₃.

The molecular weight of NaOH and FeCl₃ are 39.99 g/mol and 162.2 g/mol. As per the reaction 1 mole of FeCl₃ will react with 3 moles of NaOH.

Thus 162.2 g of FeCl3 will react with (3×39.99) = 119.97 g of NaOH. So, = 0.739 g per unit FeCl₃.

a: 45.9 meters

b: 4.29 seconds

step-by-step explanation:

a: h(t)=1/2(-9.8)(3)^2+0(3)+90

h(t)=-4.9(3)^2+90

h(t)=-44.1+90

h(t)=45.9 meters

b: 0=1/2(-9.8)(t^2)+0t+90

0=-4.9t^2+90

-90=-4.9t^2

18.37=t^2

t=4.29 seconds

in the second question, the numbers aren't exact, but they're a close approximation.

answer : a model is often used to explain and make things easier to understand when any scientific topic needs to be demonstrated and explained.

as in this case where a scientist wants to use a model to present the results of his detailed scientific investigation. he should do it as it will him to make the audience understand the concept in a much better way. also, it can be changed according to new scientific understandings.