dandoshalqara
dandoshalqara dandoshalqara
  • 19-12-2020
  • Chemistry
contestada

How many grams of ZNO shoulbe added to 30gms of 10%ZNO to get 15%oint​

Respuesta :

ardni313
ardni313 ardni313
  • 20-12-2020

Mass of ZnO added=1.765 g

Further explanation:

Given

30gms of 10%ZnO(Zinc oxide)

15% ZnO

Required

mass of ZnO added

Solution

Amount of ZnO in 30 gms of 10% ZnO =3 gms

For 15% ZnO : x= ZnO added

New solution = 30+x = 15%, so the equation :

[tex]\tt \dfrac{3+x}{30+x}=15\%\\\\15\%(30+x)=3+x\\\\4.5+0.15x=3+x\\\\1.5=0.85x\\\\x=1.765~gms[/tex]

Answer Link
00081664
00081664 00081664
  • 23-02-2021

Answer:Can some one help me

Explanation:

Answer Link

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