Many cereals are made with high moisture content so that the cereal can be formed into various shapes before it is dried. a cereal product containing 58% h2o by mass is produced at the rate of 1000. kg/h. what mass of water must be evaporated per hour if the final product contains only 20.% water?

475 kg/h

Explanation:

Hello,

In the attached picture, you're finding a "mass balance" in which you can see:

- Mass balance for water and the total mass, whereas X is the masic flow of the evaporated amount of water and Y the masic flow of the final product.

- Solving for X in the total balance and replacing that equation into the mass balance of water, we can calculate the masic flow of the final product.

- Finally, we place the masic flow of the final product into the eqn (3) to get the masic flow of the evaporated water.

Best regards.

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