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1) Find the mass of 250.0 mL of benzene. The density of benzene is 0.8765 g/mL.

7) What volume of silver metal will weigh exactly 2500.0 g. The density of silver is 10.5 g/cm3.

Sagot :

DᴀʀᴋPᴀʀᴀᴅᴏxidn

1. Find mass of 250.0 ml of benzene : -

given data :

  • density = 0.8765 g/ml

  • volume = 250 ml

we know the relation between mass, volume and density

that is

[tex] \boxed{ \boxed{density = \dfrac{mass}{volume} }}[/tex]

  • [tex]0.8765 = \dfrac{m}{250} [/tex]

  • [tex]m = 250 \times 0.8765[/tex]

  • [tex]m = 219.125 \: \: grams[/tex]

  • [tex] \approx219.12 \: g[/tex]

7. Find volume of silver metal :

given data :

  • mass = 2500.0 g

  • density = 10.5 g/ cm³

Since we already know the relation, let's solve form volume :

  • [tex]10.5 = \dfrac{2500}{v} [/tex]

  • [tex]v = \dfrac{2500}{10.5} [/tex]

  • [tex]v = 238.095 \: \: cm {}^{3} [/tex]

  • [tex] \approx238.1 \: \: cm {}^{3} [/tex]
  • Volume=250mL
  • Density=0.8765g/mL

[tex]\\ \sf\longmapsto Density=\dfrac{Mass}{Volume}[/tex]

[tex]\\ \sf\longmapsto Mass=Density\times volume[/tex]

[tex]\\ \sf\longmapsto Mass=250(0.8765)[/tex]

[tex]\\ \sf\longmapsto Mass=219.12g[/tex]

#2

  • Mass=2500g
  • Density=10.5g/cm^3

[tex]\\ \sf\longmapsto Density=\dfrac{Mass}{Volume}[/tex]

[tex]\\ \sf\longmapsto Volume=\dfrac{Mass}{Density}[/tex]

[tex]\\ \sf\longmapsto Volume=\dfrac{2500}{10.5}[/tex]

[tex]\\ \sf\longmapsto Volume=238.09cm^3[/tex]

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