Question

VA ROG OFER COROANA !!!

Answer 1

6.

ms= 200g , c%= 5%

stim ca c% = mdx100/ms

=> md = msxc%/100 = 200x5/100 = 10 g

7.

notam cu a = masa de apa evaporata

ms1 = 380 g , c1%= 20%

c.f.% = 60%

md = ms1xc1/100 = 380x20/100 = 76 g

ms.final = ms1-a = 380-a

=> 60 = 76x100/(380-a)

=> a = 15200/60 = 253,33 g